HANSON Pipe TapSquare-butt tap threads pipes quickly and easily. Convenient size stamps simplify tap selection. Durable high-carbon steel ensures long-lasting reliability. A full selection of taps are available in either National Pipe Taper (NPT) or British Standard Pipe (BSP) sizes. Tool Type: SAE Tap; Applicable Materials: Brass; Bronze; Copper; Iron; Plastic; Steel; Zinc; Pipe Capacity: 1/2".