The blade undergoes high frequency welding technology, and the cutting body is made of super hard tungsten steel with high hardness, strength and sharpness. The complex process of high frequency welding technology greatly improves wear resistance and longer service life. Unique design, extreme hardness and impact resistance ensure the sharpness of the blade, your first choice in quality. Industrial grade bits. Hardened steel housing with anti-recoil. Heat and construction resistant Teflon coating. Suitable for wood, MDF, particle board, plywood compact board; Please avoid cutting ferrous metals and other materials such as steel, iron, sand, etc.