Urethane Spider Insert Coupling Size L225 Outside Diameter 4 31/32 in System of Measurement Inch Maximum Speed 4 600 RPM Horsepower @ 100 RPM 5.6 hp Spider Material Polyurethane Maximum Torque 3 510 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 L225 Fail Safe Yes For Maximum Hub Bore 2 5/8 in For Misalignment Type Angular Parallel