Pittsburg Alleghany® Ground Thread Pulley Tap, Measuring System: SAE, Tap Style: Plug, 1/4"", 20 Pitch, Pitch Diameter Limits: H3, 1"" Thread Length, 4 Flute, Long Shank Type, 0.255"" Shank Diameter, Right Hand Cutting Direction, 6"" Overall Length, High Speed Steel