Spiral Flute Tap, Thread Size 3/8 In. -16, UNC, Overall Length 3 29/32 in, Cobalt, Black Oxide, Thread Length 1 11/16 in, 75 Percent Thread Drill Size 5/16 in, Thread Limit 2B, Class of Fit 2B, Thread Direction Right Hand, Number of Flutes 3. This item has been restricted from sale in the following state (s): []