Features: Gas tap for hard working materials. Left spiral groove angle is 8°. Applications: ● Material of alloys, medium/high carbon steel, stainless steel, cast steel. Specifications: Accuracy: JIS 2 grade Nominal Size: 1/8 Thread Length: 1.1 inches (16.5 mm) Total Length: 2.2 inches (55 mm) Shank Diameter: 0.3 inches (8 mm) Bottom Hole Diameter: 0.3 inches (8.2 mm) Processing: JIS grade material/finish: High speed steel (HS S-E / HSS )