The blade is subjected to high-frequency welding technology, and the cutter body is made of super-hard tungsten steel, with high hardness, strength and sharpness. A technology of complex process improves wear resistance and greatly increases service life. Unique design, super hardness and impact resistance ensure blade sharpness, your first choice in quality . Industrial grade bits. Hardened steel body with anti-recoil. Construction and heat resistant Teflon coating. Suitable for wood, MDF, chipboard, plywood compact board; Please avoid cutting ferrous metals and other materials such as steel, iron, sand, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.