RIDGID® Pipe Tap, Measurement System: Imperial, 1-1/2-11-1/2 Thread, NPT Thread Standard, Tapered Chamfer, 1-3/4 in Thread Length, 4-1/4 in Overall Length, 7 Flutes, Right Hand Cutting Direction, 1-1/8 in Shank Diameter, 1-47/64 in Tap Drill, High Carbon Steel, Oxide