The Park Tool CC-3.2 is a go/no-go gauge designed to accurately pinpoint when to change your chain. The CC-3.2 is long, accurate, and features permanent measurement markings. The CC-3.2 works on most derailleur chains from 5 to 12-speed.
5-to-10-speed chains: replace chain at or just before 0.75%
11-to-12-speed chains: replace at or just before 0.5%
SPECIFICATIONS
In the Pack: 1x CC-3.2
Compatibility: Most derailleur chains from 5 to 12-speed except SRAM® Flattop™ and SRAM® T-Type 12-speed chains
