Irwin 1765538 National Course Self Aligning Tap And Drill Set - 0.25 in. x 20 Pack of 3

Ideal for routine maintenance, repair work and for rethreading. Straight flutes are ground to provide rapid chip removal for efficient threading. Performance threading system self aligns tap in pre drilled hole especially in irregular surfaces or through holes. Designed for hand threading work in a variety of materials.1/4 x 20 National CourseIncludes #7 Drill BitPerformance threading system self aligns tap in pre drilled hole especially in irregular surfaces or through holesHigh speed steel drill bits ensure fast, precise drillingHigh carbon steel plug taps are ideal for general purpose threadingIdeal for routine maintenance, repair work and for rethreadingStraight flutes are ground to provide rapid chip removal for efficient threadingDesigned for hand threading work in a variety of materials.