Irwin Large Choice Self Aligning Tap & Drill Set, National Coarse, 10mm x 1.50

10 mm x 1.50, self aligning tap & drill set, carbon steel, performance threading system self aligns tap in pre-drilled hole, works especially in irregular surfaces or through holes, carbon steel, ideal for routine maintenance, repair work & for rethreading, straight flutes are ground to provide rapid chip removal for efficient threading, designed for hand threading work in a variety of materials, includes letter r drill bit.