10Pcs Straight Shank Twist Drill Bit, Tungsten Steel Milling Cutter with High Temperature Quenching, Engraving Milling Cutter for PCB Metal Wood CNC

Item Type: Straight Shank Twist DrillMaterial: Tungsten SteelHole Diameter: Approx. 12mm / 0.47inPackage List：10 x Straight Shank Twist Drill Bit

• High Temperature Quenching: These tungsten steel twist drill bits undergo high temperature quenching heat treatment to enhance overall hardness and durability, ensuring consistent performance during extended milling or drilling tasks on tough materials like metal and carbon fiber.
• Burrs Cutting : Featuring a precisely pointed cutting , this straight shank twist drill delivers clean, smooth holes without burrs, making it ideal for detailed work on circuit boards, glass fiber, and plastic where surface finish matters.
• Multi Material Compatibility: Designed for versatile use, the engraving milling cutter works effectively on PCBs, SMT components, wood, plastic, aluminum, carbon fiber board, and more, serving hobbyists, engineers, and professionals in electronics and prototyping.
• Premium Tungsten Steel Construction: Made from high hardness tungsten steel, these milling cutters offer exceptional wear resistance and bending strength, maintaining sharpness longer than standard HSS bits even under high-speed CNC or manual drilling conditions.
• Complete 10 Piece Set: This package includes 10 identical 12mm straight shank twist drill bits, providing ample replacements for frequent users in workshops or production environments, ensuring you always have a reliable tool ready for precision milling jobs.