Universal Joint Coupling Size D-3B Overall Length 2 1/4 in Maximum Bore Diameter 1/2 in Maximum Operating Angle 25 Degrees Yoke Length 1 1/8 in Boot Material Not Applicable Bore Diameter 5/16 in Number of Joints Single Joint Diameter 5/8 in Maximum Speed 1 750 RPM U-Joint Material Carbon Steel Joint Type Pin Block Booted No Outside Diameter 5/8 in Keyway Depth Not Applicable Keyway Width Not Applicable Length through Bore 11/16 in Break Torque 540 in-lb