Hytrel Spider Insert Coupling Size L150 Outside Diameter 3 47/64 in System of Measurement Inch Maximum Speed 5 000 RPM Horsepower @ 100 RPM 5.9 hp Spider Material Hytrel Maximum Torque 3 708 in-lb Parallel Misalignment 0.015 in Durometer Hardness 55D Axial Motion 0.02 mm Angular Misalignment 0.5 Degrees For Minimum Hub Bore 5/8 in Application Close Coupling L-Type Color Tan Compatible Hub Manufacturer Part Number L150 Fail Safe Yes For Maximum Hub Bore 1 7/8 in