Tools

Park's Compact Crank Puller is used to remove Shimano Octalink, ISIS Drive and square-taper cranksets. It includes 2 rotating tips (16.3 and 11.3mm) to make the job easy. This is a great tool for your travel and home tool kit.

To prevent poor shifting and uneven drivetrain wear, most manufacturers recommend chain replacement at or before 1% stretch. Now you can quickly and accurately determine the wear and stretch of any chain with Park's Chain Checker. Simply insert the Chain Checker’s pins into 2 links, press the swingarm gauge tight, and then check the gauge window for an accurate reading!

Park's Hex Wrench Set offers all the popular Allen wrenches (1.5, 2, 2.5, 3, 4, 5 and 6mm) in a convenient fold-up unit. The tool tips are chamfered for a positive grip and the one-piece fiber-reinforced-resin handle is light, comfortable, slip resistant and 40% stronger than steel.

Park Tool introduced the bicycle world to the 3-way hex wrench set over 30 years ago. Our 3-way wrenches fit perfectly in the palm of the hand and provide excellent leverage, making them a favorite of countless shop mechanics worldwide. AWS-1 FEATURES - 4mm, 5mm, and 6mm hex set - Wrenches made from industrial tool steel, through hardened and tempered for long life - Chamfered tips for a perfect fit

A favorite of shop mechanics for over 30 year's, Park's CCP-22 Crank Puller removes crankarms that feature square tapers, and those that fit on Power Drive and Power Spline bottom bracket interfaces. The long, comfortable, built-in handle and fine thread provide the leverage needed to remove even the tightest crankarms. And, there's a rotating tip to ensure smooth operation and long life.

- Organize, store and protect riding essentials all in one place - Waterprood Polyurethane case fits mini pumps, tools, tubes phones and money - Fits in a conventional watter bottle cage or jersey pocket

Giant's Ratchet Multi Tool is like having a mobile workshop in your back pocket. Featuring 9 durable chrome vanadium bits and a storage case - faster than unfolding a conventional multi-tool when you have cold or wet hands and easier to reach hard to access bolts. Features - Type: Carry with - pocket or saddle bag tool - Material: Durable, chrome vanadium bits - Number of tools: 9 - Tools: Hex 2-10mm, PH2, T25/T15 - Extra: Case

- Includes everything for a quick fix while on or off-road - Giant seat bag - 12 glueless patches - 2 tire levers - Mini pump - 9 function multi-tool

The Masterlink Pliers is a multi-tool developed to provide functions that are not on a typical multi-tool. It is designed to be light and compact so you can carry it with you. This tool serves as a tire lever, valve core remover, valve stem lock nut wrench, and master link pliers. It also provides storage for two master links so you will always be prepared on the trail. Magnets hold the master links securely in place and self close the tool. - Weight: 38.5g - Size: 116 mm x 20 mm x 9 mm - Material: 7075-T6 aluminum - 9, 10, 11, and 12-speed master links and chains - Compatible with SRAM PowerLock Link, Shimano Quick-Link, KMC Missing Link and other similar master links

The ultimate trailside companion. These high tensile steel multi-tools feature a precise fit and finish and side grips for a secure handhold even with gloves on. The m19 includes: - Chain tool: 8/9/10 speed compatible - Spoke wrench: #0, 1, 2, 3 - Hex wrenches: #2, 2.5, 3, 4, 5, 6, 8 - Open wrench: 8mm, 10mm - Screwdrivers: Phillips #1, Phillips #2, flat #2 - Torx: t-10, t-25 - Stainless steel carrying case - Length: 89 mm - Weight: 175g - Warranty: lifetime

Park’s Professional Cable And Housing Cutter is specifically for use on derailleur and brake cables and housing. It even makes quick work of hard-to-cut shift-cable housing. Its cold-forged, heat-treated-steel handles won't bend and its precision-ground jaws cut perfectly every time. Its dual-density molded grips are specially contoured for superior comfort and control. Plus, there’s a built-in cable-end crimper and a forming hole for reforming housing ends.

Park's BBT-18 is a heavy duty, investment cast tool for installing and removing all Shimano, ISIS Drive, and ISIS Overdrive 8-notch bottom bracket cups.

Cleans bicycle chain quickly, easily, and effectively — without the hassle and mess of removing the chain from the bike. The Cyclone uses a large solvent reservoir, hundreds of rotating bristles, and a two-step cleaning process to get chains really clean, improve shifting performance, and extend the life of the chain and other expensive drivetrain parts. - Works with all multi-speed bikes (5, 6, 7, 8, 9, 10, 11, and 12-speed) as well as some single-speed models and e-bikes - Strong magnet at the bottom of the fluid reservoir holds metallic particles scrubbed from the chain - Special wicking sponge draws solvent from the chain as it exits, minimizing drips and mess - Sturdy handle makes the Cyclone easy to use and control - Holds 2 fluid ounces (59ml) of solvent

Make simple trailside or roadside repairs with this multi-tool that has 14 functions. An 8mm hex head has a 4mm insert to fit each of the eight attached hex bits. With its slim design, this multi-tool can be stowed inside an EnCase System Storage Sleeve to be carried in handlebar ends as it was designed, or a mainstay on any home workbench. - 14 functions (spoke wrench; valve core wrench; flat head #3.5; Phillips #2; 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, and 8mm hex; and T10, T25, and T30 Torx) - Magnets & O-rings keep all parts in place - Ball detent swivel head helps access hard-to-reach places - Handle doubles as breaker bar when ball detent swivel head is bent for extra torque - Store in handlebar with a Wolf Tooth EnCase Storage Sleeve (sold separately) - Magnet on bottom end of tool allows for storage on steel bike stands - Fits all standard mountain handlebars and most drop bars (except being ergonomic drop bars that have hard angles in the drops)

• Updated to be stronger, smoother, and more versatile • Features a new material and redesigned tip for easier entry into just about any tire, including tubeless • The unique design lifts the tire away from the rim and features a spoke hook to use when multiple levers are needed • This set includes 3 tire levers

Park's Gear Clean Brush has a handle on one end with a curved, serrated edge perfect for cleaning between cassette cogs. The other end's tough nylon bristles are ideal for cleaning the derailleurs, chain and other drivetrain parts to keep them clean and prevent premature wear. It also works great on brakes and other components that collect dirt and grime. The GearClean easily fits in a toolbox or pack.

The new 8-Bit System is a group of multi-tools designed to work together to solve most trailside fixes. They are lightweight, strong, versatile, and small enough to fit in a jersey pocket or riding tool wrap. Three multi-tools begin the 8-Bit System: 8-Bit Chainbreaker + Utility Knife Multi-Tool, 8-Bit Tire Lever + Rim Dent Remover Multi-Tool, and 8-Bit Pack Pliers. A total of 22 functions between the three tools will keep you rolling to the next town or trailhead. - 17 functions: spoke wrench; valve core wrench; flat head #3.5 and Phillips #2 screwdriver bits; 2, 2.5, 3, 4, 5, 6, and 8mm hex; and T10, T25 Torx-compatible bits; install and remove master links; clear tire sealant clogs from valve stem; tighten valve stem lock nut - Magnets keep all bits in place - Ball detent swivel head helps access hard-to-reach places - Handle doubles as breaker bar for extra torque when head is bent - 8mm hex bit tested to over 40 Nm torque - Pliers works with 9-, 10-, 11- and 12-speed master links and chains (not compatible with Campagnolo 12-speed chains) - Master Link storage is compatible with SRAM PowerLock Link, Shimano Quick-Link, KMC Missing Link and other similar master links (not compatible with Connex Links by Wipperman)

The ultimate trailside companion. These high tensile steel multi-tools feature a precise fit and finish and side grips for a secure handhold even with gloves on. The m17 includes: Chain tool: 8/9/10 speed compatible Spoke wrench: #0, 1, 2, 3 Hex wrenches: #2, 2.5, 3, 4, 5, 6, 8 Open wrench: 8mm, 10mm Screwdrivers: Phillips #2, flat #2 Torx: t-25 Length: 89 mm Weight: 168g Warranty: Lifetime

An economical option for safely and accurately tightening fasteners to proper torque specifications. With a simple gauge readout, the TW-1.2 is intuitive and easy to use, and applies up to 14 Nm of torque to any fastener or component with left or right-handed threads. Perfect for low-torque applications such as stem bolts, levers, and carbon fiber components. 3/8" drive for compatibility with all Park Tool sockets, bits, and crow feet. - 0 to 14 Newton meter (0 to 140 inch-pound) range - 3/8" drive - Reads and registers torque values for both left hand and right hand threading - Length: 11.5" (292 mm)

Park's Heavy-Duty Tire Levers handle the toughest tire-and-rim combinations including difficult downhill and freestyle tires. Their specially designed tips engage the tire bead so it can be removed with just two levers. Plus, these beefy, forged-steel levers are a full 8-inches long for superior leverage.

Many chains use a master link that allows the chain to be installed and removed by hand. While master links don't require traditional chain tools, over time, dirt and corrosion can make it difficult to separate them by hand. Park's Master Link Pliers make removing and installing these master links quick and easy. Simply insert the specially sized jaws into the link and squeeze the vinyl-coated handles!

- Hex wrenches 2, 2.5, 3, 4, 5, 6, 8 - TX wrenches 10, 25 - PH1 screwdriver - Chain tool - Schrader & Presta valve tool - Flat screwdriver 1.0 x 5.0 - Spoke Key 3.3, 3.45 and DT

A great way to hold small parts, tools and components during a repair, Park Tool's Benchtop Overhaul Mat features multiple small pockets and one large work area. It's perfect for suspension work or to organize parts for installation. • Made of a rubber-like PVC • Cleans easily and looks great on any bench • Measures: 14.7” x 7” (38cm x 18cm)

Park's I-Beam Mini Fold-Up Hex Wrench/Screwdriver/Torx Set with Chain Tool includes 1.5, 2, 2.5, 3, 4, 5, and 6mm Allen wrenches, a socket 8mm Allen, a regular screwdriver, a T25 Torx tool (for disc-rotor bolts), a tire lever, spoke wrenches and a chain tool. The I-Beam conveniently fits in pockets and packs, too.

- Simple, secure external emergency tire patch kit. - Seals cuts and other tire damage larger than 3mm or punctures sealant will not repair. - Kit includes 3 patches and glue in a compact carry case.

Essential parts to properly service and maintain all Avid CODE brakes. - Replacement parts for 2007-2010 CODE brakes - Includes bearings, bearing press tool, pivot bolt, cam, cam spring, and lever

- Aids in the quick change of oil-bath fluid in RockShox Totem forks and for servicing/bleeding XX-Series Xloc hydraulic remote systems (Not for reverb seatposts) - Includes: Speed lube syringe+hose, adapter fittings/O-rings, And port-access wrench

- For removing/installing cartridge bearings in SRAM X0 hubs and Roam, Rail and Rise wheels

When a flat strikes, this organized kit will get you rolling in no time. Kit Includes: - Control Blast 0 Inflator Head - Mtb Kit: (65067) 2, 25G Threaded Co2 Cartridge - Road Kit: (65066)2, 16G Threaded Co2 Cartridge - Ratchet System Multi-Tool (2, 2.5, 3, 4, 5 ,6Mm Hex, T10, T25 Torx And Flathead) - Liv Tire Levers

High-quality Wera L-keys with color-coded, convenient plastic sleeve. The tool is quickly accessible and the ergonomic and pleasant handle is easy on the hands even at low temperatures. The Hex-Plus profile offers a larger contact surface within the screw head. This reduces the notching effects to a minimum and almost completely eliminates the risk of destroying the screw recess. The ball-end on the long arm allows for reliable working even in difficult installation situations. The BlackLaser surface treatment provides outstanding surface protection, even against corrosion, and a long service life. The tools are quickly to hand thanks to the laser-engraved and thereby wear-resistant size markings on the L-keys. - L-keys for hexagonal socket screws - Hex-Plus allows socket head screws to live longer - Color coded, easy-to-grip plastic sleeve, even at low temperatures - Hexagonal ballpoint on the long arm - Wear-resistant size marking

Having the right tools and accessories makes riding a bike all the more enjoyable. The MSW Essential Tool Wrap Kit organizes 20 common tools in a tidy travel-ready kit with built-in workspace for knocking out general maintenance and repairs in the workshop or out on the trail. Complete with hex wrenches, tire levers, patch kits, and more, it offers durable construction, a simple yet secure hook-and-loop closure, and freedom to swap in different tools depending on your needs. - Holds 20+ tools at 18" max length in main compartment - Additional capacity in zipper compartment - Hang via grommets, lay flat, or fold it over your repair stand Kit includes: Pedal wrench, Gear pick, Gear brush, Chain whip, Chain tool, Freewheel remover, 7-pc. hex wrench, Box wrench (4, 5, and 6mm), Tire levers (2), Patch kit, Spoke wrench, Philips and flat-head screwdrivers

- Easy to use tool for checking chain wear

Y-Style Hex Wrench - Perfect for common hex hardware found on modern bicycles and components. - New improved ergonomic Y-style handle design. - Features refined body shape, quick-spin bit sleeves, longer bits, and bit-size indication. - Designed to stand up to the harsh conditions of professional use. - Pedro's popular Y-Wrenches feature heat-treated tool steel construction and durable plastic body designed to stand up to the harsh conditions of professional use. - The new improved ergonomic design features a refined body shape for improved fit and comfort, new quick-spin bit sleeves for speed and versatility, and bit-size indication for quick tool identification. - Backed by Pedro's lifetime warranty.

- Use to install fork dust seals

Factory service kits for Reba A7 forks

With its continuous and parallel jaws, the Joker 6004 replaces several single spanner sizes. The required size is automatically and continuously set when attaching the tool to the hexagon bolt or screw. The integrated lever mechanism securely clamps the hexagon screw or bolt between the jaws, reducing the risk of slippage or damage. The ratchet feature ensures fast and consistent screw driving without removing the tool. By using the corner-width rectangular prisms, a return angle of only 30° can be achieved. The single-arm design, in conjunction with the ratchet feature and the corner-width prism, makes it possible to work even in confined spaces. - The adjustable Joker 6004 covers all metric and imperial dimensions in the respective field of application - Automatic and continuous grip of hexagon screws and bolts - Lever mechanism when gripping avoids slipping and damage - Fast and consistent screwdriving without removing the wrench thanks to mechanical ratchet function - Return angle of only 30° through placement in the corner-width rectangular prisms in the mouth

Wera compact tool with multi-component Kraftform handle for high working speeds and ergonomic screwdriving. Integrated bit magazine in the handle. Includes ratchet: fine-pitched for small return angle, switchover ring (right, fixed, left), maximum torque of up to 50 Nm; hexagonal blade with 1/4" hexagon socket take-up, stainless sleeve, strong magnet. - Kraftform Kompakt with ratchet function for high working speeds - Kraftform with anti-roll feature, multi-component, integrated magazine - Fine-pitched teeth for small return angle; switchover ring (right, fixed, left) - Maximum torque of up to 50 Newton meters

The Bottom Bracket Wrench removes and installs Shimano Hollowtech II, Race Face X-type, FSA MegaExo, Campagnolo Ultra-Torque and TruVativ Giga X-pipe bottom brackets. Laser cut for a precise fit, one end of the BBT-9 securely engages the 16 cup notches, while the other end engages the 8 internal splines of the crankarm adjustment cap.

The 1729-TA Sliding Thru Axle Adaptor is designed to allow any Park Tool PRS-20, PRS-21 or PRS-23 Repair Stand to accept 12mm and 15mm thru axle wheeled bikes.

- Ergonomic forged aluminum side plates. - Black forged Center-Pivot CrV bits wrapped. - Chrome Vanadium steel fastening hardware. - RAP 18/24/25: Cast stainless steel chain breaker with integrated spoke wrenches (HEX 8/10mm wrench, 4 spoke wrenches) - RAP 25: Lightweight aluminum Presta CO2 inflator. - RAP 24/25: Multi-function flat tool (bottle opener, DISC brake wedge, rotor trimming tool) - RAP 6: Hex: 3, 4, 5, 6mm; T25; Phillips - RAP 12: Hex: 2, 2.5, 3, 4, 5, 6, 8mm; T10, T25, T30; Flat; Phillips - RAP 18: Hex: 2, 2.5, 3, 4, 5, 6, 8mm; T10, T25; Phillips; quick link; steel chain breaker - RAP 24: Hex: 2, 2.5, 3, 4, 5, 6, 8mm; T10, T25, T30; Flat; Phillips; quick link; steel chain breaker; bottle opener - RAP 25: Hex: 2, 2.5, 3, 4, 5, 6, 8mm; T10, T25, T30; Flat; Phillips; quick link; steel chain breaker; CO2 inflator; bottle opener - Multi-Tool Weight: 140g - Number of Tools:13

This professional-grade set includes five unique cleaning tools purpose-built for scrubbing away dirt and grime, with long ergonomic handles for leverage and comfort. The soaping brush, bottle brush and straight brush feature bristles made from tampico, a natural fiber derived from the agave plant. Tampico is extremely durable, resists chemicals, and holds moisture well, making it an ideal material for cleaning brushes. BCB-5 FEATURES Included brushes: - Soaping Brush: Great for making an initial pass over the bike, dispersing soapy water and breaking up large accumulations of debris. - Tapered Bottle Brush: A general purpose tampico brush for scrubbing areas both big and small. - Straight Brush: A long-reach brush with short, tight tampico bristles for getting into small nooks and crannies such as suspension pivots, saddle rails, and other hard to reach areas. - Drivetrain Brush: Long, stiff nylon bristles make this brush ideal for derailleurs, cassettes, and other areas with grease or dirt build up. - Soaping Sponge: Useful for applying soap and water as well as cleaning delicate surfaces, with a convenient wedge shape. Notes about tampico fibers: - Tampico is a natural fiber: as such, variations in the color of the bristles are to be expected. - Tampico bristles may become temporarily deformed in shipment or storage. Get brushes wet, reshape by hand, and hang to dry. - Always allow tampico brushes to dry fully in an open area before storage to inhibit growth of mildew or mold.

The DC-2 is a vernier caliper for accurately measuring seat posts, head tubes, bearings, spoke diameters, and other components, featuring a large LCD screen for accuracy and ease of use. The tool’s ability to measure in metric and inches in external, internal, depth, and stepped dimensions make it an indispensable shop tool. - Range: 150 mm | 6" - Resolution: 0.01 mm | 0.0005" - Accuracy: +/- 0.02 mm | 0.001" - Repeatability: +/- 0.01 mm | 0.0005" - Measures external, internal, depth, and stepped dimensions - Uses LR44 batteries

Our 6806 open bore adapter is used to press 42x30 sealed bearings. The adapter is machined with one step at 30mm ID, which fits into the center of the sealed bearing. Common bearing size for BB30 frames and bottom brackets. - Installs: 6806 bearing - Inner step outer diameter: 29. 9mm - Outer diameter: 41. 8mm - Thickness: 7mm - Thru hole diameter: 0. 387" (9. 8mm) - Inner hole sized to fit 1/2" threaded rod - Compatible BP0006, BP0007 - Machined, red anodized aluminum - Sold individually (2 drifts required for some installations)

It’s a CO2 & a mini tool all in one! Features: - Tools Included: 8, 6, 5, 4, 3, 2.5 & 2mm Allen Keys, Phillips & Flathead Screwdrivers, T25 - CO2 Inflator Built Into Tool - Presta & Schrader Valve Compatible Specs: - Number Of Tools: 11 - Weight: 136 Grams

Incredibly compact set arrangement with many tools in a minimum of space. A completely new ratchet set feeling thanks to the unique textile boxes that are very robust and durable. They can be positioned upright for tidy storage on the workshop shelf. Additional surface protection due to textile outer material. Low weight and volume for simpler mobility. - Freely pivoting ratchet head with 5 predefined locking positions - Fine toothing with 72 teeth - Small return angle of only 5 degrees - Free-turning sleeve for high working speeds - Take-it-easy tool finder: color coding by size

Performing the right maintenance on your SRAM and RockShox products not only ensures years of worry-free riding, but will also keep performance optimal and enhance your experience on the bike. Each service interval indicates the maximum number of riding hours designated for each type of recommended maintenance. Depending on the terrain and environmental conditions in your location, your riding style, and skill level, you may see more optimum performance if you service your SRAM and RockShox products at shorter intervals.

- Everything you need for a quick fix on the road - 3 tire levers - Patch Kit - 9-function multi-tool - CO2 inflator with 2 16g CO2 cartridges - Seat bag

L-keys made from circular material with plastic sleeve for use on bicycles. The plastic sleeve makes working comfortable even at low temperatures and is easy on the fingers. All L-keys are easily accessible due to their color coding and size markings. For hexagonal socket screws and Torx screws. In a robust and lightweight folding pouch. - L-key set for hexagonal socket screws and Torx screws - L-keys with Hex-Plus advantage for a longer screw life - L-keys are easy to find thanks to their wear-resistant size markings - In a practical, lightweight folding pouch for easy carrying

• Use to remove air shaft and damper shaft • Reverse threaded • See RS1 Service Manual for instruction

The Muc-Off 8 in 1 Bicycle Cleaning Kit is perfect for any lover of bikes. Complete with Muc-Off's Nano Tech Bike Cleaner, Expanding Microcell Sponge, Soft Washing Brush, Detailing Brush, Claw Brush, Two Prong Brush, Bike Spray and Storage Tub this kit has pretty much everything you need to keep your bike looking nice and tidy. It makes a great Christmas or birthday gift for your bicycle-obsessed friends and family. This kit isn't style-specific either. No matter if you're into Road, MTB, Cyclocross or just getting from A to B, this 8-in-1 kit solves even the most annoying bike cleaning problems!

- Designed to clean your bike frame and components while caring for delicate finishes - Tough impact resistant dual density handle that won’t slip in extreme conditions - Oversized head for fast cleaning of large areas - Rubberized impact zones for maximum protection

Perfect for pro and novice mechanics, Jagwire's Pro Housing Cutter is made from high-quality steel to cut cable housing sections cleanly every time. They have an awl built in for opening just-cut housing liners that have gotten pinched, too. The vinyl-coated handles make these cutters great to use and the yellow makes them easy to spot on your workbench or in your toolbox, too!

- Includes everything for a quick fix while on or off-road - Giant seat bag - 12 glueless patches - 2 tire levers - Mini pump - 9 function multi-tool

Service kit for Cane Creek suspension forks.

Park Tool's 750.2 Centering Cone Adaptor increases the size of the centering cone of the HTR-1 and HTR-1B Headtube Reaming and Facing Sets. The 750.2 will allow you to use the HTR-1(B) to ream and face head tubes designed to accept IS, ZS, and 1.5-inch EC headset standards. Before reaming or facing, make sure you have the correct cutting tool and pilot for the headset standard(s) you are using. Please refer to our product pages for cutters and pilots for this detailed compatibility information.

Upgrades the DT-5 to the DT-5.2. - Four telescoping axle adaptors - Two stand off studs for Flat Mount alignment - 12mm front fork thru axle sleeve

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 36-notch tool fittings, including Praxis Works M35 bottom brackets. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive. Fits 36-notch bottom bracket tool fittings with a major diameter of 51–53 mm and a minor diameter of 50.7 mm, including: - Box® Two Oversized M35 - Praxis Works® M35

This combination chain whip and freewheel / lockring remover wrench is heat treated to prevent bending and flexing, with a molded handle for comfort. - 1/8-inch model works on 1/8-inch chains and sprockets - 1-inch (25.4mm) box-end wrench fits Park Tool Freewheel/Cassette Lockring Tools - Features hardened pins to keep the chain in place

This dual-sided brush is specifically designed for cleaning hard-to-reach areas of the bicycle drivetrain. The long, stiff bristles of the GSC-3 are narrow enough to reach between the gears of tightly-spaced modern cassettes, while the slim contoured end is capable of picking grit and grime out of tight spaces such as derailleur pulley wheels.

Park Tool offers premium-quality reamers for nearly any bicycle standard. The reamers below are designed to quickly, accurately, and precisely ream headtubes when used with Park's Head Tube Reamer (HTR), ensuring a perfect headset fit and prfoessional-quality bicycle build. Choose the correct reamer for your application using the following information: - 751.2: This reamer is sized to 30.1mm. This allows a 0.1mm interference fit when pressing the 30.2mm headset of the “Euro” one-inch standard. - 754.2: This reamer is sized to 33.9mm. The allows a 0.1mm interference fit when pressing the 34.0mm headset of the 1-1/8" standard. - 788: This reamer is sized to 43.95mm. It reams head tubes to accept “internal” headset cups with 44.05 - 44.10mm O.D. (1-1/8 ZS standard). It is used with Park Tool's 690-XL Facing Cutter and 750 Centering Cone. - 738: This reamer is sized to 52.1mm. It is used to ream head tubes using the 1-1/2" integrated headset standard. It is used with Park Tool's 690-XL Facing Cutter and 750.2 Centering Cone Adapter. - 789: This reamer is sized to 55.95mm. It is used to ream head tubes to accept “internal” headset cups with 56.00–56.10mm O.D. (1-1/2 ZS standard). It is used with Park Tool's 690-XXL Facing Cutter and #750 Centering Cone Adaptor. - 799: This reamer is sized to 47mm. It is used for cutting the lower head tube on frames using an IS47 bearing for a 1-1/4" integrated headset. It cuts a 45-degree bearing set shoulder.