Spiral Flute Tap, Thread Size 1/2 In. -13, UNC, Overall Length 4 5/16 in, Cobalt, Black Oxide, Thread Length 1 1/2 in, 75 Percent Thread Drill Size 27/64 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): []