35MM POSITIONING DRILL BIT: It is more accurate and safer to use these drill bit sets in the drill press. The tip is specially designed to drill holes cleanly and is perfect for drilling hidden hinges and door locks. EXCELLENT PERFORMANCE: The head is designed with an arc shape, which makes it easy to remove debris and offers high working efficiency. The cutting edge is sharp, the positioning is precise, the hardness is high, the precision is high, and the cutting is stable. The drill bit can drill a clean flat bottom hole without chipping. HIGH QUALITY: High quality alloy blades, hardened, tempered and carbon HSS steel frame make the blades more sharp and more durable. More fluid and less noisy. The knives are painted, waterproof and anti-corrosion. WOODWORKING TOOLS: Suitable for making holes in wood. Precision grinding is suitable for mass use and easy to re-sharpen. They can easily enlarge existing holes and can punch through any arc. VARIOUS USES: It can be used for perforating products wooden, fix goals, drawers, plastic products, wood, plywood, etc. Suitable for pistol drills, bench drills, vertical drills, portable electric drills, vertical electric drills and moving belt magnetic drills, etc.