Straight Flute Tap, Thread Size #10-32, UNF, Semi-Bottoming, Overall Length 2.38 in, Cobalt, Black Oxide/Nitride, Right Hand, Thread Length 0.5 in, 75 Percent Thread Drill Size #21, Thread Limit H3, Class of Fit 2B. This item has been restricted from sale in the following state (s): []