Urethane Spider Insert Coupling Size L050 Outside Diameter 1 1/16 in System of Measurement Inch Maximum Speed 18 000 RPM Horsepower @ 100 RPM 0.06 hp Spider Material Polyurethane Maximum Torque 39 in-lb Parallel Misalignment 0.015 in Durometer Hardness 90A Angular Misalignment 1 Degrees Application Blowers Compressors Generators Pumps Color Blue Compatible Hub Manufacturer Part Number L050 Fail Safe Yes For Maximum Hub Bore 5/8 in For Misalignment Type Angular Parallel