Shimano E-Thru thru axle for 12 x 142 mm rear hubsano E-Thru The tool-free removable axle system optimises strength and load distribution and ensures trouble-free operation thanks to the reliable internal cam mechanism and the new fastening method. Diameter: 12 mm Type: Quick release thru-axle Operating Range: MTB Material Axle: Aluminium Lever: Aluminium Weight Rear: 74 g Installation Width Rear: 142 mm