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 0.0571 hp Spider Material Polyurethane Maximum Torque 36 in-lb Parallel Misalignment 0.006 in Durometer Hardness 85A Axial Motion 0.03 in Angular Misalignment 1 Degrees Color Blue Compatible Hub Manufacturer Part Number JC21 JCC21 JS21 JSC21 MJC33 MJCC33 MJS33 MJSC33 Deform Torque 36 lb-in