Manufacturer Name: Maima, Co., Ltd. [Features] Standard pipe tap and is used when the screw part is not sufficient. Uses: Medium and high carbon steel, cast steel, cast iron, ductile cast iron, aluminum alloy casting. Specifications: Accuracy: JIS 2 Grade Nominal Size: 1/2 Thread Count: 14 Thread Length: 1.1 inches (27 mm) Total Length: 3.1 inches (80 mm) Shank Square Part: 0.6 inches (18 mm) Shank Diameter: 0.6 inches (14 mm) Bottom Hole Diameter: 0.7 inches (18.0 mm) Processing Screw: Twist Thread Count: 2.0 mm) Cutting Screw: Non-coated Tap Grade: JIS Grade [Material/High Speed Steel (HS-Class E/HSS)