Universal Joint Coupling Size DD-4B Overall Length 5 3/8 in Maximum Bore Diameter 5/8 in Maximum Operating Angle 50 Degrees Yoke Length 1 3/8 in Boot Material Not Applicable Bore Diameter 5/8 in Number of Joints Double Joint Diameter 3/4 in Maximum Speed 1 750 RPM U-Joint Material Carbon Steel Joint Type Pin Block Booted No Outside Diameter 3/4 in Keyway Depth Not Applicable Keyway Width Not Applicable Length through Bore 7/8 in Break Torque 768 in-lb