17Pcs/Set Colorful Hinge Wood Hex Handle Self Center Tool w/ 8 Drill BitsOOTDTYechs: . Easy to use and install: different wood hardness, you need different same centering of the drill bit, just use hex wrenches to take the screw away from you and replace the drill bit with a new one. Ideal carpentry tool for woodworking, wooden doors, cabinets, windows, etc. : self-centering steel drill bits with high hardness, which is rust-resistant, solid, , and excellent drilling performance, which is the conductor for centering the holes needed for hinges. Package Included: Hinge drill bit set comes with 8 color hinge screws with sizes of 5/64", 7/64", 2x 9/64", 11/64", 13/64", 1/4", 5mm; 1 x Hex wrenches, 8 x Spare drill bits (for each of the 8 sizes, only centring drill bits). Reasonable Design: The double-sided hole design quickly and automatically discharges sawdust from the hole on both sides, without blocking the drill bit, which helps to save time in removing sawdust. Widely used: use for furniture, kitchen, woodworking, window door, etc. It can be adjusted to the hardness of the wood. If the wood is soft, you can choose a smaller one, if the wood is hard, you can choose a suitable one or a larger one. Specification: Material: Metal Size: as the picture Drill Bits: 5/64''7/64'' 9/64'' 11/64'' 13/64''5mm 1/4'Package Included: 17x/Set Colorful Wood Hinge Drill Bits (8x Colorful Common Hinge Screws + 1 x Hex Wrench + 8x Spare Drill Bits)Note: 1. Please allow 1-2cm errors due to manual measurement, please make sure you do not mind before ordering. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.