- Effortless Efficiency: The rounded design of these hinge drill bits ensures clean, accurate flat bottom holes. The quick waste removal feature enhances your drilling efficiency, while the option to use water or coolant prevents overheating, allowing for smooth operation. - Durable Construction: Made from high-quality carbon steel, this set of 5 hinge drill bits is built for long-lasting use. Enjoy precise drilling without compromising on strength and durability. - Versatile Sizing: Each set includes 5 different sizes (15mm, 20mm, 25mm, 30mm, 35mm) to meet various project needs. The thoughtfully designed packaging allows for easy storage and quick access to the right bit when you need it. - Wide Compatibility: These drill bits are compatible with a range of drills, including drill machines, vertical drills, hand drills, and stand motor-operated drills. Experience confident drilling with precise positioning and stability, eliminating wobbling during operation. - Practical Applications: Perfect for woodworking projects, cabinet installations, or any task that requires precise hinge placements. Whether you are a DIY enthusiast or a professional, these bits will enhance your drilling capabilities.