Specification Brand : NDNCZDHC BulletPoint1 : High Hardness and Strength: The drill bit features high hardness and strength, providing sufficient bending strength for demanding applications. BulletPoint2 : Pointed Cutting Edges: The pointed cutting edges allows for milling and trimming the edges of the orifice, ensuring a clean, tidy surfaces with no burrs. BulletPoint3 : Good Milling Performance: Designed for optimal milling and cutting performance, this drill bit ensures high work efficiency in various tasks. BulletPoint4 : Versatile Application: Suitable for engraving on materials like PCB, CNC, circuit boards, metal, plastic, wood, SMT, glass fiber, and carbon fiber boards. BulletPoint5 : High Temperature Quenching Treatment: The high temperature quenching heat treatment enhances overall hardness, providing a more comfortable and effective tool for use. ItemName : NDNCZDHC 10Pcs Drill Bit Set, 9mm Hole Diameter Straight Shank Twist Drill Bits for PCB, CNC, Circuit Board, Metal, Plastic, Wood ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 12 centimeters ItemPackageDimensions_Width : 6 centimeters ItemTypeKeyword : circuit-board-drill-bits Manufacturer : NDNCZDHC ModelNumber : NDNCZDHCfw51cz40mx NumberOfItems : 1 PartNumber : NDNCZDHCfw51cz40mx ProductDescription :