Uxcell M3 x 0.5mm Pitch Taper and Plug Metric Tap, 3x0.5mm, 3-Piece
Straight threaded flute, Plug type, Taper cutting edges and 3mm diameter flute, 0.5mm flute teeth pitch. 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).