Spiral Flute Tap, Thread Size 1/2 In. -20, UNF, Overall Length 3 3/8 in, High Speed Steel, Bright (Uncoated), Thread Length 1 5/8 in, 75 Percent Thread Drill Size 11.40 mm, Thread Limit H11, Class of Fit 1B, Thread Direction Right Hand, Number of Flutes 3. This item has been restricted from sale in the following state (s): []