Unior Tools | Master Chain Tool

Workshop precision, built to handle every chain.

A professional-grade chain tool designed for mechanics and riders who need reliable, precise chain installation and removal across a wide range of drivetrains.

As the most advanced chain tool in Unior’s lineup, it features a fully machined body and precision spindle threads for smooth operation and consistent results. Compared to standard chain tools, its floating chain support system and interchangeable supports ensure perfect alignment—making it especially effective even with modern high-speed and AXS chains.

Key Features

• Precision Machined Construction
Ensures smooth threading and accurate chain pin driving every time.

• Floating Chain Support System
Automatically aligns the chain for perfect positioning and reduced risk of damage.

• Broad Compatibility Range
Supports 6–13 speed derailleur chains, SRAM AXS flat top chains, and most 1/8" single-speed chains.

• Complete Support Kit Included
Includes long and short derailleur chain supports, SRAM AXS support, Campagnolo chain pin blocker, and a replacement chain pin.

Technical Specifications

• Category
Chain Tool

• Discipline
Road / Gravel / MTB

• Compatibility
All derailleur chains (6–13 speed), SRAM AXS flat top chain, Campagnolo 11/12/13-speed (chain peening), most 1/8" single-speed chains

• Construction / Material
Machined steel body with precision spindle threads

Model Codes

• Standard
628516

Compatible with standard bicycle chains across multiple drivetrain systems.