SENRISE Twist Drill Bit Set High Speed Steel for Wood Aluminum Plastic Quick Change 12MM-38MM

Pilot point twist drill bit, high speed steel material. High performance twist drill bit with morse taper shank for high precise drilling of larger bore diameter. Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency. Self-centering point, do not need assistant center drilling or center punching. For general using drilling in wood, aluminum, malleable iron, plastic etc.