CC-3.2 Chain Wear Indicator Boxers Also fits Tiagra 4700

Also fits Tiagra 4700

Featuring a low profile and snug inner eye fit

•Features with a guide pin to work more stable

Rail Material: Proprietary Stainless Steel Alloy

CC-3.2 Chain Wear Indicator Boxers Also fits Tiagra 4700A 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% "stretch," 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