Package Dimensions:27 x 3 x 3 cm 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. Specification: Item Type: Bike Rear Hub Axle Material: Aluminium Alloy Package List: 1 x Bike Rear Hub Axle 2 x Wrench Adjustable Length: Bike hub shaft has a unique two stage design with adjustable length, supporting 142 to 148mm hubs. Bike hub parts are made of aluminum alloy, strong and durable, not easy to discolor or rust, repeated use is not easy to damage. Compatible: Bike rear wheel hub axle both ends are tapered head, compatible with most of the fixed holes of the riding platform. Bike hub shaft is CNC machined to ensure the strength and accuracy of the shaft, fine workmanship. Solid and Durability : Solid, durability hollow axles which can refit normal bike axles into quick release axles. You can use it to repair your mountain bike quickly. Perfect for cycling lovers, your best choice Professional Design : Shorter set of hollow shaft and hub quick release lever for the front wheel, longer one for the rear wheel. Key Product Features Protection: Bike hub rear shaft with washers, according to the shape of frame hook claw added, used to defend frame hook claw. Adjustable Length: Bike hub shaft has a unique two stage design with adjustable length, supporting 142 to 148mm hubs. Bike hub parts are made of aluminum alloy, strong and durable, not easy to discolor or rust, repeated use is not easy to damage. Compatible: Bike rear wheel hub axle both ends are tapered head, compatible with most of the fixed holes of the riding platform. Bike hub shaft is CNC machined to ensure the strength and accuracy of the shaft, fine workmanship. Solid and Durability : Solid, durability hollow axles which can refit normal bike axles into quick release axles. You can use it to repair your mountain bike quickly. Perfect for cycling lovers, your best choice Professional Design : Shorter set of hollow shaft and hub quick release lever for the front wheel, longer one for the rear wheel. Key Product Features Protection: Bike hub rear shaft with washers, according to the shape of frame hook claw added, used to defend frame hook claw.