Universal Joint Coupling Size DD-2B Overall Length 4 in Maximum Bore Diameter 3/8 in Maximum Operating Angle 50 Degrees Yoke Length 1 in Boot Material Not Applicable Bore Diameter 1/4 in Number of Joints Double Joint Diameter 1/2 in Maximum Speed 1 750 RPM U-Joint Material Carbon Steel Joint Type Pin Block Booted No Outside Diameter 1/2 in Keyway Depth Not Applicable Keyway Width Not Applicable Length through Bore 5/8 in Break Torque 378 in-lb System of Measurement Inch