Park Tool CC-3.2 Chain Wear Indicator w23 the Gravdal securely navigates through

the Gravdal securely navigates through harsh winter conditions with concave carbide studs far added traction in icy conditions

Windproof forehead protection with elastic GORE® WINDSTOPPER® membrane

Fits a calf size up to 16 inches

even with wet gloves

waterproof and breathable 3-layer interlock polyester fabric

Park Tool CC-3.2 Chain Wear Indicator w23 the Gravdal securely navigates throughPark Tool CC 3. 2 Chain Wear Indicator Designed to accurately indicate when a chain reaches . 5% and . 75% which most chain manufactures recommend replacement. Chain wear indicator is a simple go or no go tool. Updated to be longer, more accurate and features permanent measurement markings Accurately indicates when a chain reaches 0. 5% and 0. 75%, the points at which most chain manufacturers suggest replacement.