The use of high-quality materials can better protect the tool during grinding. The adopts a clear design, a soft and delicate touch, a simple slender outline, and an elegant proportion of the body, which can be clean and tidy even in a greasy kitchen environment. The grinding wheel can be replaced, the newly optimized grinding wheel replacement process. The grinding wheel assembly adopts precision grinding bearings, which can be smoother and longer life. Rough grinding and fine grinding twice, three gears, a range of applications, can meet the needs of more tools.