Designed for woodworking, this self centering drill bit can be your great helper. Made of for long time and durable use. It has a simple design, but very practical in use, giving you a . Also can be a good gift choice for your friends, they will like it. Features -Color:Black -Material:Alloy, high carbon steel -Size:9.80X1.80X1.80cm/3.85X0.71X0.71in - Sawdust automatically drains of the holes on both sides without clogging the drill. - Easy to replace and install: According to the hardness of the wood, you can choose different drills, and the drills can be easily replaced by removing the screws. - The drill sleeve is precisely positioned without movement. Suitable for installation of door hinges. - Includes different hinge screw sizes for carpenters, cabinets, furniture makers and other woodworking industries. - Made of high carbon steel, high hardness, rust-proof, strong, durable and easy to use. Package list: 1 x 1/4 inch drill bit 1 x 5mm drill bit