Park Tool CC-3.2 Chain Checker
This simple, yet effective CC-3.2 Chain Checker tool is the tool of choice for old school mechanics and anyone who prefers a simple- go or no go chain stretch measurement device. It allows for the most rudimentary check of your chain wear to see if it is acceptable to continue use. The two sides of the CC-3.2 allow you to determine if your chain is at least .5% or .75% stretch.
For 9 and 10-speed chains, replace your chain just as the gauge fits the 0.75% side fits flat into the chain. For 11 and 12-speed models, replace when the 0.5% side fits. If you are looking for a basic, inexpensive, and wholly reliable tool to check for chain stretch, the CC-3.2 is your best choice.
- Dual-end chain wear measurement tool for any and every tool box
- Steel construction for long wearing use, with accurate measurements
- Works on all 1/2" pitch chain, from 1 to 12-speed
- Measures at either .5% or .75% stretch and wear