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The Super B TB-3330 Chain Checker Hook Tool is a 2-in-1 bike tool that quickly and accurately indicates chain wear so you know exactly when it's time to replace your chain. It fits a huge range of drivetrains from 5 to 13-speed, including SRAM® T-Type, SRAM® Flattop™ and Shimano® XTR® 12-speed chains, and its built-in chain hook holds the chain in place for easy installation or removal.
- Quickly and accurately indicates chain wear for timely replacement
- Fits 5 to 13-speed chains, including SRAM® T-Type, SRAM® Flattop™ and Shimano® XTR® 12-speed chains
- Single speed chains: replace at or just before 1% wear
- 5-to-10-speed chains: replace at or just before 0.75% wear
- 11-to-13-speed chains: replace at or just before 0.5% wear
- Built-in chain hook holds the chain in place for easy installation or removal