Features: brand new and high quality ● Size: 5/64"/5.8cm, 7/64"/8.8cm, 9/64"/9.5cm, 11/64"/9.5cm ● High-speed steel drill bit and electroplated brass body; adjustable drilling depth; strengthen the for protection of metal products ● The drill bit adopts self-centering design, disassembling the drill bit for easy replacement means less walking and more precise drilling ● for Ideal woodworking tool for woodworking, install hinges on wooden doors, cabinets, for windows, etc. ● Sawdust will automatically come out of the rectangular hole on the brass for shell, and will not jam the drill bit when drilling Specifications: Material: high speed steel DIY supplies: woodworking Type: hinge drill Specification: 5/64" 7/64" 9/64" 11/64" Scope of application: household, woodworking Package Includes: 4PcsxSelf Centering Hinge Drill Bits note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.