Designed and tested in the rugged conditions of Colorado, these thru-axles will meet the demands of every riderCaptive rotating axle washer reduces friction on bikes frames and forks during installation, preventing potential damageMachined from aircraft quality 7075 aluminum to be stiff, durable and long lastingLow-profile design reduces weight, minimizes snag points, and provides a clean sleek look5mm hex on both ends of the axle for easy installation and removalAxle length is compatible +/- 2mmReplacement for OEM thru-axles*See the Links section below for help finding the correct Thru AxleRTA-12-172-1.0Rear172mm12TA7075ALBlack18mm12x1.0FlatUPC/EAN/GTIN: 811079029478