• A worn chain shifts poorly and wears sprockets at an accelerated rate.
• The CC-3.2 is a go/no-go gauge designed to accurately indicate when a chain reaches .5% and .75%, the points at which most chain manufacturers suggest replacement.
• For 9 and 10-speed chains, replace chain just as the gauge fits the 0.75% side fits flat into the chain.
• For 11 and 12-speed chain, replace as the 0.5% side fits.
• The CC-3.2 is long, accurate and features permanent measurement markings.
• The CC-3.2 works on all 1/2" pitch chain, from 1 to 12-speed. Check with manufacturer for specific replacement instructions.

Park Tool has been manufacturing bicycle specific tools since 1963. Based out of St. Paul Minnesota, we are the worlds largest bicycle tool manufacturer. A long-term dedication to quality, innovation, and customer service has made Park Tool the first choice of professional and home bicycle mechanics around the world.

CC-3.2 CHAIN WEAR INDICATOR

A worn chain shifts poorly and wears sprockets at an accelerated rate. The CC-3.2 is a go/no-go gauge designed to accurately indicate when a chain reaches .5% and .75%, the points at which most chain manufacturers suggest replacement. For 9 and 10-speed chains, replace chain just as the gauge fits the 0.75% side fits flat into the chain. For 11 and 12-speed chain, replace as the 0.5% side fits. The CC-3.2 is long, accurate and features permanent measurement markings.