Inch - Metric: Inch
Outside Diameter - Inch: 1.563
Inside Diameter - Inch: 0.801
Inside Diameter - Millimeter: 20.345
Other Features: Face Dia 1.125 | 11 Tangs

Outside Diameter - Millimeter: 39.7

Thread Size: M30 X 1.5
Nominal Thickness - Inch: 0.276
Nominal Thickness - Millimeter: 7
Inch - Metric: Metric
Outside Diameter - Inch: 1.772

Other Features: Carbon Steel
Outside Diameter - Millimeter: 45

Thread Size: M25 X 1.5
Nominal Thickness - Inch: 0.276
Nominal Thickness - Millimeter: 7
Inch - Metric: Metric
Outside Diameter - Inch: 1.496

Other Features: Carbon Steel
Outside Diameter - Millimeter: 38

Bore Profile: Finished Bore
Component: Hub
Coupling Type: Jaw Coupling
Inch - Metric: Inch
Outside Diameter - Inch: 1.359

Material: Sintered Steel
Other Features: Components May or May Not Intermix Among Brands | 3 Jaws
Length Thru Bore - Millimeter: 19.05
Mounting Method: Set Screw
Hub Diameter - Millimeter: 34.519

Bore Profile: Finished Bore
Component: Hub
Coupling Type: Jaw Coupling
Inch - Metric: Inch
Outside Diameter - Inch: 1.75

Material: Cast Iron
Other Features: Components May or May Not Intermix Among Brands | 3 Jaws
Length Thru Bore - Millimeter: 20.65
Mounting Method: Set Screw
Hub Diameter - Millimeter: 44.45