Features Versatile Application: Ideal for engraving PCB, CNC, circuit board, metal, plastic, wood, SMT, glass fiber, carbon fiber board, and more. Cutting Edge: The pointed cutting edge ensures clean, burr- s and milling and trimming of orifices. Exceptional Hardness: High wear resistance, bending strength, and overall hardness for long-lasting performance. Heat Treated for Durability: High temperature quenching heat treatment enhances hardness, ensuring prolonged usability. Superior Milling Performance: Offers excellent cutting performance, ensuring efficient and milling and cutting s. Features: 1、Application: Used for engraving PCB, CNC, circuit board, metal, plastic, wood, SMT, glass fiber, carbon fiber board, etc. 2、Pointed Cutting Edge: Pointed cutting edge, can mill and trim the edge of orifice, the is clean, tidy and of burrs. 3、High Hardness: High hardness, high wear resistance, high strength, with sufficient bending strength and wear resistance. 4、High Temperature Quenching Heat Treatment: High temperature quenching heat treatment, strengthen the overall hardness, more comfortable to use. 5、Good Milling Performance: Has good milling and cutting performance to ensure high work efficiency. Specification: Item Type: Straight Shank Twist Drill Material: Tungsten Steel Hole Diameter: Approx. 6mm / 0.24in Package List: 10 x Straight Shank Twist Drill Bit Package List 10 x Straight Shank Twist Drill Bit