Park Tool, CC-4, Chain Checker, Compatibility: 5-12 sp. (Inc AXS) / PARK TOOL
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- Drop-in style gauge
- Laser cut CC-4 accurately measures a long section of chain
- Strategically comes in contact with the chain in three places
- Compatible with 5-12 speed derailleur chains (including SRAM AXS)
- Designed to accurately indicate when a chain reaches .5% and .75% wear