Park Tool CC-4.2 Bicycle Chain Wear Checker
Special Features
- Takes the guesswork out of determining when a chain is worn out
- Accurately measures wear on all 1/2" pitch bicycle chains
- Compatible with all 5-to-13 speed chains
- Compatible with single-speed chains
- Compatible with SRAM AXS 12-speed chain
- Go/no-go gauge indicates 0.5%, 0.75% and 1.0% wear
- Made in the USA
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