This is a woodworking drill bit. It can be used for all kinds of wood, wood products, plastics, plywood and other materials. It is suitable for industrial hinge installation, wood processing and maintenance, model making, installation of spherical door tips, drawer tips, etc. Features - Color: Silver - Material: Tungsten steel alloy. - Size: 8.00X4.00X4.00cm/3.14X1.57X1.57 inch. - Made with advanced technology, materials, sturdy and durable. - The hole is neat, smooth, no broken edges, no tremor phenomenon. - The incision resistance is small, the opening is increased, and the chip removal is easy. - Suitable for electric drill, bench drill, high power electric grinder, pneumatic drill, magnet drill, drill. - Can be used for a variety of wood, wood products, plastics, plywood and other materials.