5 piece set Hex Shank Screw Point Self Feed Wood Auger Drill Bits

The support drill consists of a head, a drill body and a drill shank. The head includes the outer circle of the head, the counter-cutting edge, the main cutting edge and the screw tip. The diameter of the outer circle of the head is slightly larger than the diameter of the drill body, and the counter-cutting edge Located at the front end of the outer circle of the head, the main cutting edge is located at the root of the screw tip and perpendicular to the drill axis, and the screw tip is located at the front end of the drill. It has the advantages of smoothness and lightness, high use efficiency, smooth hole wall after drilling and smooth chip removal.