Pipe and Conduit Thread Tap, Thread Size 1/4 In. -18, NPT, Overall Length 2 7/16 in, High Speed Steel, Bright (Uncoated), Right Hand, Thread Length 1 1/16 in, 75 Percent Thread Drill Size 0.4375 in, Thread Limit Not Applicable, Class of Fit Not Applicable, Number of Flutes 4. This item has been restricted from sale in the following state (s): []