Oil Resistant Spider Insert Coupling Size FC25 Outside Diameter 2 1/2 in System of Measurement Inch Maximum Speed 3 450 RPM Horsepower @ 100 RPM 0.71 hp Spider Material Rubber Maximum Torque 450 in-lb Parallel Misalignment 0.002 in Angular Misalignment 1.5 Degrees Color Black Compatible Hub Manufacturer Part Number FC25 Fail Safe Yes For Misalignment Type Angular Parallel Horsepower @ RPM 8.2 hp @ 1150 RPM Maximum Operating Temperature 200 Degrees F