Features Versatile Application: Ideal for engraving PCB, CNC, circuit board, metal, plastic, wood, SMT, glass fiber, and carbon fiber board, making it a versatile tool for various projects. Precision Cutting: The pointed cutting edge allows for milling and trimming of orifices, ensuring a clean, tidy of burrs for professional results. High Hardness and Strength: With high wear resistance and bending strength, this tungsten steel drill offers exceptional durability and reliability for long-term use. Enhanced Durability: The high-temperature quenching heat treatment enhances overall hardness, providing added comfort and longevity during use. Efficient Performance: This twist drill milling cutter delivers exceptional milling and cutting performance, ensuring high work efficiency for a professional finish. 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