Straight Flute Tap, Thread Size 1/2 In. -20, UNF, Taper, Overall Length 3 3/8 in, High Speed Steel, TiN, Right Hand, Thread Length 1 21/32 in, 75 Percent Thread Drill Size 11.40 mm, Thread Limit H3, Class of Fit 2B. This item has been restricted from sale in the following state (s): []