Irwin 1903 1/4″-18 NPT 4-Flutes High Carbon Steel Pipe Taper Tap, 3/4″ Per Foot
• Available in National Pipe Taper (NPT) and British Standard Pipe Taper (BSP). • Nominal size of the tap is that of the pipe fitting being tapped. Model IRWI 1903. • Ideal for pipe fittings. • Tapered at a rate of 3/4″ per foot.