OSG 1680900 Straight Flute Hand Tap, Plug, 4 Flutes($30.55Value)
Straight Flute Tap, Thread Size 1/2 In.-28, UNEF, Plug, Overall Length 3 11/32 in, High Speed Steel, Bright (Uncoated), Right Hand, Thread Length 1 1/8 in, Thread Limit H3