Jaw Coupling Spider Coupling Size JC21 JCC21 JS21 JSC21 MJC33 MJCC33 MJS33 MJSC33 Outside Diameter 1 5/16 in System of Measurement Inch Maximum Speed 8 000 RPM Horsepower @ 100 RPM 0.1110 hp Spider Material Polyurethane Maximum Torque 70 in-lb Parallel Misalignment 0.005 in Durometer Hardness 92A Axial Motion 0.03 in Angular Misalignment 0.9 Degrees Color Yellow Compatible Hub Manufacturer Part Number JC21 JCC21 JS21 JSC21 MJC33 MJCC33 MJS33 MJSC33