Product Description The SM-AX720 thru-axle by Shimano - for Road and MTB The Shimano SM-AX720 thru-axle is available in two versions: for 12 x 100 mm Road front wheels and for 12 x 142 mm Road and MTB rear wheels. Thanks to the Shimano E-Thru construction, it convinces with optimal stiffness at minimal weight. Both the lever and the 121 or 163 mm long hollow axle are made of aluminium. Specifications:Over Locknut Dimension:front: 100 mm, rear: 142 mmAxle Diameter:12 mmTechnical Information:Use:front:: 12 x 100 mm, rear: 12 x 142Type:thru-axle with quick release leverAxle Material:AluminiumLever Material:AluminiumAxle Length:front: 121 mm, rear: 163 mmNominal Diameter:M12Thread Pitch:1.5Features:Shimano E-Thrufor Road (front, rear) and MTB (rear)hollow axlewithout locknutaxle and lever black anodisedManufacturer Numbers:12 x 100 mm:E-SMAX720F1001212 x 142 mm:E-SMAX720R14212Contents:1 x Shimano SM-AX720 thru-axle Weight: black | 12 x 142 mm: 74 g black | 12 x 100 mm: 65 g Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com