Parktool- Chain wear indicator Batteries & Chargers SRS - single-lip type seal

SRS - single-lip type seal making axial face contact and removable snap ring

Gears 2x12 speed

ANT+ / BLE Data Transmission

HSTN is available with Oakley Authentic Prescription lenses

Frame suitable for medium to large faces

Parktool- Chain wear indicator Batteries & Chargers SRS - single-lip type sealA 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 the chain just as the gauge fits the 0. 75% side fits flat into the chain. For 11 and 12 speed chains, replace the 0. 5% side fits. The CC 3. 2 is long, accurate, and