Uxcell M3 3mm Cutting Diameter 3 Flutes HSS Straight Screw Thread Taper (10-pack)

Suit for machine use to cuts a thread on the inside surface of a hole creating a female surface which functions like a nut. A taper tap offer a very gradual cutting action and is most often used when the material to be tapped is difficult to work (e.g. alloy steel).