General description Using these drill bit sets in the drill is more precise and safer. The tip is specially designed for drilling holes cleanly, making it perfect for drilling hidden hinges and door locks. The head features an arc shape that effectively removes dirt, ensuring high work efficiency. The drill can create clean, flat-bottomed holes without chipping, making it ideal for various woodworking applications. Technical specifications Diameter: Ø 25 mm Depth range: 10–40 mm Material: High carbon HSS steel with alloy blades Features: Sharp cutting edge, high hardness, and precision Waterproof and corrosion-resistant coating Compatibility and accessories Suitable for pistol drills, bench drills, vertical drills, hand drills, vertical drilling machines, and moving belt magnetic drills Usage Drilling holes in wood, plywood, and plastic products Enlarging existing holes and drilling arcs Suitable for mass use and easy to resharpen