OEP Couplings type UJ universal joint is a high-precision pin-and-block joint.  Available in a wide range of sizes, from 2mm bore up to 30mm bore and above.  Material options include high-strength alloys of aluminum, stainless steel, and carbon steel.  Available booted and unbooted.  Shaft attachment options include clamping, set screws, or predrilled for spring pin.

OEP Couplings universal joints are precision CNC machined, and as a result, are stronger than those of other manufacturers, and have less play or windup.  A complex yoke geometry also increases peak torque rating.