Spur Gear, Metric Module Pitch 1, Bore Diameter 8 mm, Bore Type Plain, Hub Diameter 16 mm, Hub Projection 6 mm, Face Width 6 mm, Pitch Diameter 40 mm, Material Duracon, Pressure Angle 20 Degrees , Bore Diameter Tolerance -0.3 mm, Gear Construction Webbed, Gear Shape S9.
5.5 mm, Hub Type Hub with Set Screws, Includes Set Screw, Material Stainless Steel, Material Grade SUS303, Maximum Teeth Hardness 187 HB, Metric Module Pitch 1.