Feature 1,Adjustable Length: Bike hub shaft has a unique two stage design with adjustable length, supporting 142 to 148mm hubs. 2,Compatible: Bike rear wheel hub axle both ends are tapered head, compatible with most of the fixed holes of the riding platform. 3,CNC Machining: Bike hub shaft is CNC machined to ensure the strength and accuracy of the shaft, fine workmanship. 4,Protection: Bike hub rear shaft with washers, according to the shape of frame hook claw added, used to defend frame hook claw. 5,Aluminum Alloy Material: Bike hub parts are made of aluminum alloy, strong and durable, not easy to discolor or rust, repeated use is not easy to damage. Item Type: Bike Rear Hub Axle Material: Aluminium Alloy Package List 1 x Bike Rear Hub Axle 2 x Wrench Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin