Pipe and Conduit Thread Tap, Thread Size 1/4 In. -18, NPT, Overall Length 2 7/16 in, High Speed Steel, TiN, Right Hand, Thread Length 1 1/16 in, 75 Percent Thread Drill Size 0.4375 in, Class of Fit 3B, Number of Flutes 4. This item has been restricted from sale in the following state (s): []