Three Piece Tap Kit, Tap Thread Size 3/8 In. -16, High Speed Steel, Bright (Uncoated), Thread Standard UNC, Thread Length 3/4 in, Overall Length 2 15/16 in, 75 Percent Thread Drill Size 5/16 in, Thread Limit 2B, Class of Fit 3B, Thread Direction Right Hand, Number of Flutes 4. This item has been restricted from sale in the following state (s): []