Features Durable Material Construction - Made from high-quality aluminum alloy and iron, ensuring long-lasting performance and resistance to wear and tear Precise Positioning Capability - Designed for high positioning accuracy, this tool prevents shifting during drilling, making your projects more efficient and reliable Automatic Chip Discharge - Features a unique design that allows chips to automatically discharge from the hole, preventing drill jams and ensuring smooth operation Versatile Drilling Applications - Ideal for drilling door and window hinges, this tool has a simple structure that makes it easy to use for various carpentry tasks Multiple Drill Bit Sizes - Includes drill bits of different specifications, providing the versatility needed for a wide range of woodworking projects and applications Features: 1、Selected high？quality aluminum alloy and iron materials, strong and , wear？resistant. 2、High positioning accuracy, will not shift when drilling, easy . 3、The chips will automatic discharge from the hole on either side of the top of the drill, not stuck drill. 4、Mainly used for drilling door and window hinges, with simple structure. 5、Hinge hole puncher, with drill bits of different specifications, suitable for woodworking. Specification: Item Type: Hinge Drill Bit Material: Aluminium Alloy and Iron Size: 5/64in: hole diameter is about 2mm / 0.08in, use about 2.2-2.8mm/0.09-0.11in tapping screw 7/64in: hole diameter is about 2.8mm / 0.11in, use about 3-3.5mm/0.12-0.14in tapping screw 9/64in: hole diameter is about 3.5mm / 0.14in, use about 4-4.5mm/0.16-0.18in tapping screw x 2 11/64in: hole diameter is about 4.5mm / 0.18in, use about 5-5.5mm/0.2-0.22in tapping screw 13/64in: hole diameter is about 5.1mm / 0.20in, use about 5.6-6.1mm/0.22-0.24in tapping screw 1/4in: hole diameter is about 6.m / 0.25in, use about 6.8-7.m/0.27-0.29in tapping screw (When opening the hole, please adjust it according to the hardn of the wood. If the wood is soft, you can choose the smaller one. If the wood is hard, you can choose the corresponding or the larger one. The wood chips will be automatically discharged from the holes on both sides of the drill, will not jam the drill bit, punching effect.) Package List: 8 x Hinge Drill Bit 1 x Hex Wrench Note: betweendiv>1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.between/div>betweendiv>2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.between/div> Package List 8 x Hinge Drill Bit 1 x Hex Wrench