Features:<br>&nbsp;100% Brand new and high quality<br>Suitable for front or rear axles<br>Suitable for the types of 9 MM axis bicycles, exclude Fastdisassembly type Hub axis<br>Diameter of Thread: Approx. 3/8 inch<br>Length: Approx. 2.75inch / 6.9cm<br>Good tool for picking up another person by bicycle<br>Cylinder shape carved with non-slipping grooves<br>Attaches onto axle for performing bike tricks<br>Strongly-built, safe and high weight-bearing<br>Provide protection for speed shifting system<br>Material: aluminium alloy<br>Shape: cylinder with anti-slip groove<br>Measurements: Length: 70mm<br>Outer diameter: 23mm (1")<br>Color: Silver<br>Tips: Please do not stand on top, which will increase the rider indanger in the road. To avoid danger, do not load more than 60kg