Irwin 80217 Hanson 8-32 NC Thread HCS Plug Tap and #29 HSS Drill Bit Combo Pack 8-32NC Tap size / # 43 Drill Bit Designed for hand threading work in a variety of materials Tap size and drill bit size are etched on each tool for easy identification First 3 to 5 threads chamfered for general purpose threading Straight flutes are ground to provide rapid chip removal for efficient threading