Pay in 4 interest-free payments of $4.99 Learn more
Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
Compatible with 5 to 13-speed and single-speed chains
It’s built for riders who value simplicity
The arms are foldable for easy storage when not in use and the rack tilts down for easy cargo door access
Can you keep up
Laser-cut design contacts the chain at three points
Park Tool CC-4.2 Chain Checker Tool Compatible with 5 to 13-speedA worn bicycle chain can cause poor shifting and expensive drivetrain damage. The Park Tool CC 4. 2 Chain Checker is a drop in gauge that measures chain wear accurately. It contacts the chain in three places, eliminating guesswork. Compatible with 5 to 13 speed and single speed chains, it indicates wear at 0. 5%, 0. 75%, and 1. 0%, matching manufacturer replacement recommendations. Measures bicycle chain wear accurately, preventing expensive
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