Park Tool CC-4.2 Chain Checker Tool It’s built for riders who

It’s built for riders who value simplicity

Can you keep up

Laser-cut design contacts the chain at three points

The arms are foldable for easy storage when not in use and the rack tilts down for easy cargo door access

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Park Tool CC-4.2 Chain Checker Tool It’s built for riders whoA 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