Buna N Spider Insert Coupling Size L150 Outside Diameter 3 47/64 in System of Measurement Inch Maximum Speed 5 000 RPM Horsepower @ 100 RPM 2.0 hp Spider Material Buna-N Maximum Torque 1 240 in-lb Parallel Misalignment 0.015 in Durometer Hardness 80A Axial Motion 0.015 mm Angular Misalignment 1 Degrees Application Close Coupling L-Type Color Black Compatible Hub Manufacturer Part Number L150 Fail Safe Yes For Misalignment Type Angular Parallel