Park Tool Chain Wear Indicator (CC-3.2) product-type_d-locks-and-u-locks The BBB-4 features clear

The BBB-4 features clear

It's the most effective cooling system available

Shea Butter and Sunflower Oil

but if you have a breezer style dropout or another unusual setup

5 X 54 X 36mm / 24g

Park Tool Chain Wear Indicator (CC-3.2) product-type_d-locks-and-u-locks The BBB-4 features clearAbout Park Tool Chain Wear Indicator (CC 3. 2) 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