1) Convenient clamping, no special clamping head is required, almost all rotating processing equipment and tools can be used, such as: drilling machines, milling machines, lathes, machining centers, power tools, etc. 2) Wide range of application, not only suitable for chamfering of ordinary machined parts, but also suitable for chamfering and deburring of precision difficult to chamfer parts. Such as: aviation, military industry, automobile industry oil, gas, electric valve, engine block, cylinder, sphere through hole, inner wall hole. 3) High working efficiency, fast processing operation can be realized due to its own elastic strength, no matter manual free operation or automatic timing feed can obtain good processing results. 4) It can be repeated grinding, suitable for mass production, and can effectively reduce costs. 5) Use this product before tapping; using it after tapping may damage the threads.