High-speed Steel drill with a brass shell designed, precise position accurately without shift，it is excellent drill guide for centring the pilot holes needed for the hinges. Sharp 135 degree oblique edge the head of a bit, make the drill more rapid drilled into the position of hinge holes.
Wood chips are automatically discharged: Sawdust will be automatically drained from both sides of the holes, without drill blocked, you don’t have to remove wood chips, effectively increasing your work. Different hardness wood, need different centring drill, you just need to take the screw apart and replace the drill. Professional video use tutorials will be provided.