Motion Control Coupling, Bore Diameter 1 63/64 in, Bore Diameter 2 25/64 in, Coupling Outside Diameter 1.77 in, Maximum Speed 12,700 RPM, Maximum Torque 159 lb-in, Hub Material Aluminum, Overall Length 2.48 in, Shaft Locking Type Clamp On, System of Measurement Inch, Bellows Material Stainless Steel, Different Bore Sizes No, Length Through Bore 1 0.47 in, Length Through Bore 2 0.47 in, Parallel Misalignment 0.008 in, Angular Misalignment 1.5 Degrees , Axial Motion 0.02 in