- High-speed steel tap set, 3 pieces 5/8 -11NC Surtek,- Each set contains one straight tap, one conical tap and one semi-conical tap
,- Straight tap designed to completely thread blind holes, normally used for rectifying threads ,- Semi-conical taps are mostly used in through holes and where there's enough space at the en of blind holes ,- Conical taps are used as guides to start threading the holes