[Features] The warm has a precision rolling finish. Modules 0.5, 0.8, 1.0, pressure angles 20° (medium teeth). Pre-threaded Standard Circle Diameter D: 0.4 inches (10.4 mm); Tooth Width b: 0.8 inches (20 mm); Hole Diameter (in.): -; Total Length: 3.1 gal (80 mm); Torsion Direction and Points of War: L1.4 inches (40 g); Pressure Angle 20° (Normally Teeth); Country of Origin: Japan