Suitable for both front and rear axles ?Strongly-built， solid material ?Safe and heavy weight-bearing ?Cylinder shape carved with non-slipping grooves ?Convenient tool for picking up another person by bicycle ?Attach onto axle to perform bike tricks ?Good protection for speed shifting
Material: aluminum alloy Suitable for the types of 9 mm axis bicycles，exclude fast disassembly type hub axis Diameter of Thread: Approx. 3/8 inch
