Universal Joint Coupling Size USSK40 Overall Length 7 in Maximum Bore Diameter 1 1/4 in Maximum Operating Angle 45 Degrees Yoke Length 3 1/2 in Boot Material Nitrile Bore Diameter 1 1/4 in Number of Joints Single Joint Diameter 2 1/2 in Maximum Torque 6 400 in-lb Maximum Speed 1 000 RPM U-Joint Material Alloy Steel Joint Type Pin Block Booted No Outside Diameter 2 1/2 in Keyway Depth 1/4 in Keyway Width 1/4 in Length through Bore 2 1/16 in Break Torque 32 000 in-lb