Description: Specification:6800/6801/6802/6803/6804/6805/6806/6900/6901/6902/6903/6000/6001/6002/0922/608/609/R6/R8/688/689/699/1526/1728 and BB70/BB86/BB90/BB92/BB30. Suitable for press-in installation of hubs, tower bases, bottom brackets, and soft-tail frame bearings. The aluminum alloy is CNC precision processed and anodized; only the outer ring touches the bearing jacket when it is pressed in, which effectively protects the bearing from wear. The tool screw adopts a special T-thread screw for CNC machine tools, which effectively improves the tension, reduces wear, and is convenient and practical. Great bike repair kit. Specification: Material: Aluminum Alloy+Steel Size Chart: 330x280x80mm/12.99x11.02x80inch Package Includes: 1 Set Bearing Installation Tools Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!