[ABS resin main body, fast sharpening and sharper than ever] The main body of the thermal double wheel sharpener adopts high-quality ABS resin material, which organically unifies the comprehensive properties of PB, PAN and PS, and has excellent mechanical properties of toughness, hardness and rigidity, strong impact resistance and high safety. , And it is lightweight, non-toxic, easy to clean, and can be used with confidence. [Rough grinding and fine grinding make a good knife with each other] Rough grinding with fine grinding, maintenance once a week, always keep the knife in good condition, and use a new knife every day. 【Rough diamond grinding wheel is specialized for high-hardness and blunt knives】 Diamond grinding wheel is a special tool for grinding hard alloys and other very hard and brittle materials. It has the characteristics of high abrasion resistance, long service life, and low wear. It can be used on the thermal sharpener to easily process various hardness tools. The