FLEXIBLE COUPLING; TYPE: WITH INTERMEDIATE ELASTOMERIC ELEMENT; INTERNAL DIAMETER-HUB 1: 0.375"; INTERNAL DIAMETER-HUB 2: 0.375"; MAXIMUM NOMINAL TORQUE: 28 LB"; LENGTH: 1.35 "; MAXIMUM OUTSIDE DIAMETER: 1.22 "; REFERENCE DRAWING: N/A; MAXIMUM SPEED: 3450 RPM ; HOLE TOLERANCE= 0.001",-0.000"; SPLG