Features: This tool is designs to convert the axles of a bike hub to accommodate different size: 12mm, 15mm, and 20mm. Make of aluminum alloys and 304 stainless steels, and it have durability, strength, and corrosion resistance. The tool have adjusted opening ranges from 85mm to 175mm, ensuring that it can accommodate various wheel size for efficient and precise conversions. Light weight and easy to carry designs, total length 20cm/7.8inch, easy to operate and use. Easy to Use:Just simply place the adapter on any brand wheel truing stand. Make surely wheel is in the center. Specifications: Materials: Aluminum alloys and 304 stainless steels Rod length: about 20cm/7.87inch Package Includes: 1pc Bicycles Wheel Truing Stand Adapter Tool note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.