Screw Thread Insert STI Tap, Thread Size 1/2 In. -13, UNC, Overall Length 3 13/16 in, High Speed Steel, Bright (Uncoated), Right Hand, Thread Length 1.09 in, Tap Chamfer Plug, Thread Limit H4, Class of Fit 2B-3B, Number of Flutes 3. This item has been restricted from sale in the following state (s): []