The grinding wheel assembly adopts grinding bearings, which can be smoother and longer life. The use of high-quality materials can better protect the tool during grinding. The grinding wheel can be replaced, the newly optimized grinding wheel replacement process. 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. Rough grinding and fine grinding twice, three gears, a range of applications, can meet the needs of more tools.