The tapping of the hole cutting operation, tip tap will play its good cutting results, quickly and smoothly for you the most advanced cutting thread, tip tap tap with the hand the same general line trench, but in the cutting front-end has been specially designed spiral groove, pushing membership to rotate the discharge of cuttings from the bottom of the hole, tap with a rotating tip because the chip discharge the functions, in addition to keeping the groove clean to reduce resistance to cutting outside, and can avoid blockage caused tap chip damage, so the tip tap of the hand than can be faster to tap high-precision thread cutting. Scope: generally used for carbon steel, alloy steel and non ferrous metals such as through holes.