Feature Highlights:1. High-Quality Construction: Made from high-speed steel (HSS), this drill bit set offers exceptional strength and hardness. It ensures durability, superior drilling performance, and precise centering for hinge pilot holes.2. Efficient Double-Sided Design: The unique double-sided hole design allows sawdust to be discharged quickly and automatically from both sides, preventing bit blockage and saving you cleanup time.3. Easy Installation: Featuring a user-friendly design for perfect punching results, it is ideal for door hinge installation. Bits can be changed rapidly with one-handed loading and unlocking.4. Versatile Application: Suitable for furniture, kitchens, woodworking, windows, doors, and more. For woods of varying hardness, simply unscrew and replace the bit with a new one.5. Complete Set with Common Sizes: Includes four of the most essential bit sizes for woodworkers: 5/64", 7/64", 9/64", and 11/64", plus one Allen key.Product Details:This self-centering hinge drill bit set is crafted from high-speed steel for enhanced durability and precise drilling. Its intelligent double-sided hole design ensures efficient sawdust removal without clogging. The tool allows for quick, one-handed bit changes and is designed for easy, hassle-free installation of hinges on various wooden surfaces. Perfect for carpenters, joiners, and DIY enthusiasts working on furniture, cabinets, doors, and windows.Specifications:- Product Name: Hinge Drill Bit Set- Color: Silver- Material: High-Speed Steel (HSS)- Included Sizes: 5/64", 7/64", 9/64", 11/64"- Accessory: 1 x Allen KeySize Guide:- 5/64": Hole diameter approx. 2 mm. For use with screws approx. 2.2 - 2.8 mm.- 7/64": Hole diameter approx. 2.8 mm. For use with screws approx. 3 - 3.5 mm.- 9/64": Hole diameter approx. 3.5 mm. For use with screws approx. 4 - 4.5 mm.- 11/64": Hole diameter approx. 4.5 mm. For use with screws approx. 5 - 5.5 mm.