A convenient HCS tap and HSS drill bit combo, the Hanson 1/2 in. – 13 NC Tap and 27/64 in. Drill Bit Set is perfect for general purpose threading. You’ll get fast, precise drilling with the high-speed steel drill bit and the self-aligning taps are ideal for through holes and irregular surfaces. Set includes 1/2 in. – 13 NC Tap and 27/64 in. drill bit.