Material: The center drill is designed with a high quality drill bit and a hardened shell, which is wear-resistant, durable, rust-proof, anti-corrosion, and has a long service life Multi-function: The center bit is very suitable for hinges, handles, drawer sliders, and woodworking. Suitable for professionals and woodworking enthusiasts. The center punch can accurately locate various materials and can be used as a tree bag for a belt or a glass window circuit breaker for car safety Easily disassemble the chip: Sawdust can be automatically discharged from the top of the holes on both sides, will not block the drilling, can be used with , no need to manually chip, speed up the work process. colour:Black Material:steel Package Contents: 10 x center drill(5/64inch,5/64inch,7/64inch,7/64inch,9/64inch,9/64inch,11/64inch,5mm,13/64inch,1/4inch) 10 x replacement drill bit 1 x hex wrench 1 x center punch Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.