Chain Pitch - Inch: 0.5
Chain Pitch - Millimeter: 12.7
Pitch Diameter - Inch: 4.783
Inch - Metric: Inch
Outside Diameter - Inch: 5.057

Chain Size: 40
Material: Steel
Other Features: Black Oxide Finish | For X-Weld On Hub
Pitch Diameter - Millimeter: 121.5
Mounting Method: Finished Bore

Chain Pitch - Inch: 0.625
Chain Pitch - Millimeter: 15.875
Pitch Diameter - Inch: 4.788
Inch - Metric: Inch
Outside Diameter - Inch: 5.123

Chain Size: 50
Material: Steel
Other Features: Black Oxide Finish | For X-Weld On Hub
Pitch Diameter - Millimeter: 121.62
Mounting Method: Finished Bore

Inch - Metric: Inch
Outside Diameter - Inch: 5.11
Inside Diameter - Inch: 3.612
Inside Diameter - Millimeter: 91.745
Outside Diameter - Millimeter: 129.794

Thread Size: M100 X 2
Nominal Thickness - Inch: 0.709
Nominal Thickness - Millimeter: 18
Inch - Metric: Metric
Outside Diameter - Inch: 5.118

Outside Diameter - Millimeter: 130

Inch - Metric: Inch
Outside Diameter - Inch: 5.11
Inside Diameter - Inch: 3.83
Inside Diameter - Millimeter: 97.282
Outside Diameter - Millimeter: 129.794