Spiral Flute Tap, Thread Size #10-32, UNF, Overall Length 2 3/8 in, Cobalt, Black Oxide, Thread Length 1/2 in, 75 Percent Thread Drill Size #21, Thread Limit H2, Class of Fit 3B, Thread Direction Right Hand, Number of Flutes 3. This item has been restricted from sale in the following state (s): []