F-Loc Spur Gear Metric Module Pitch 1 Bore Diameter 8 mm Bore Type Finished Hub Type Locking Hub Hub Diameter 19 mm Hub Projection 10 mm Face Width 6 mm Pitch Diameter 30 mm Material Acetal Pressure Angle 20 Degrees Bore Diameter Tolerance H7 Gear Shape S1 Hub Material Stainless Steel Hub Material Grade SUS303 Includes Hex Socket Screw