Spiral Point Tap, Thread Size 3/4 In. -10, UNC, Overall Length 4 59/64 in, Cobalt, Black Oxide, Right Hand, Thread Length 2 13/64 in, 75 Percent Thread Drill Size 16.50 mm, Thread Limit 2B, Class of Fit 2B, Number of Flutes 4. This item has been restricted from sale in the following state (s): []