Park Tool CC-3.2 Chain Wear Indicator w23 Windproof forehead protection with elastic

Windproof forehead protection with elastic GORE® WINDSTOPPER® membrane

2% LYCRA® spandex

Fits a calf size up to 16 inches

we love this layer for cross country skiing

Pre-Shaped for better fit

Park Tool CC-3.2 Chain Wear Indicator w23 Windproof forehead protection with elasticPark 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.