Dormer Pipe Tap, Straight Flute, Series: E710, Measurement System: Imperial, 3/8-18 Thread, NPT Thread Standard, Semi-Bottoming Chamfer, 27 mm Thread Length, 80 mm Overall Length, 4 Flutes, Right Hand Cutting Direction, 17.8 mm Shank Diameter, 14.5 mm Tap Drill, 13.5 mm Square, HSS, Bright, Medium Hook