Feature: 1. There are many kinds of bayonets, which are widely used to free your hands. 2. Special aluminum jaws will not harm the thread. 3. With magnetic force, it can be adsorbed on the workbench. 4. It has a variety of functions, which can be used to intercept the seat tube, repair the front fork, maintain the pedal, hub wheel set, disassemble and install the crankset, etc.