1) Made of high carbon steel with threaded tip. 2) Screw threaded centre point for precisely locating the bit and for fast self-starting of the hole. 3) Single outer cutting spur for splinter free drilling and clean holes. 4) Wide lands keep bit straight as it bores through the hole. 5) Full length heat treatment guards against bending bit in heavy-duty applications. 6) Solid center tupe with single cutter and spur design with screw point for faster and cleaner boring for general hard and soft wood. 7) Taper Square Shank prevents spinning in drill chuck. 8) Cutting Edge precision ground for long life.