Polyurethane Spider Insert Coupling Size FC25 Outside Diameter 2 1/2 in System of Measurement Inch Maximum Speed 3 450 RPM Horsepower @ 100 RPM 1.2 hp Spider Material Polyurethane Maximum Torque 845 in-lb Parallel Misalignment 0.002 in Angular Misalignment 1 Degrees Color Tan Compatible Hub Manufacturer Part Number FC25 Fail Safe Yes For Misalignment Type Angular Parallel Horsepower @ RPM 13.1 hp @ 1150 RPM Maximum Operating Temperature 200 Degrees F