Spiral Point Tap, Thread Size 9/16 In. -12, UNC, Overall Length 4 21/64 in, Cobalt, Black Oxide, Right Hand, Thread Length 1 49/64 in, 75 Percent Thread Drill Size 12.20 mm, Thread Limit 2B, Class of Fit 2B, Number of Flutes 4. This item has been restricted from sale in the following state (s): []