General description Perfect for precise drilling, the HSS Countersink Drill Bit features a double slot conical design that accommodates a range of hole sizes from 5mm to 35mm in diameter. This versatile drill bit is suitable for various materials including steel, wood, plastic, brass, aluminum, and PVC, making it an essential tool for electricians and DIY enthusiasts alike. Technical specifications Diameter range: 5mm - 35mm Material: High-speed steel (HSS) with titanium coating Hardness: HRC > 60 Operating temperature: Up to 500°C Usage Ideal for drilling into steel, brass, plastic, wood, copper, fiberglass, PVC, and aluminum. Features a double flute design for faster and smoother drilling. Marking hole position for precise drilling. Other information Dimensions are laser engraved for durability and will not wear out with repeated use. This product is not for sale to children.