6 Piece NPT Taper Piper Tap Set ~ Thread ground. ~ High speed steel. ~ Cuts internal threads in pipes. ~ Ideal for pipe fitting. ~ Tapered at a rate of 3/4" per foot. ~ Includes 1 each of the following sizes: 1/4~18, 3/8~18, 1/2~14, 3/4~14, 1~11-1/2, 1-1/4~11-1/2.
