1.Ideal for rethreading fasteners and fastener holes for auto and machinery repair. 2.Precision milled sae tap and die set for cutting raw material or repair existing threads, remove screws and more function. 3.It can improve the efficiency of processing thread, a necessary tool for hand tapping operation 4.Spiral tap has a shallower flute passage than conventional taps. This gives the spiral point tap more cross-sectional area, which provides great strength, allows higher tapping speeds, and requires less power to drive. 5.Spiral point tap has the cutting face of the first few threads cut at a predetermined angle relative to the tap’s axis angle to force the evacuation of chips ahead of the cutting action.