Hytrel Spider Insert Coupling Size L075 Outside Diameter 1 47/64 in System of Measurement Inch Maximum Speed 11 000 RPM Horsepower @ 100 RPM 0.36 hp Spider Material Hytrel Maximum Torque 227 in-lb Parallel Misalignment 0.015 in Durometer Hardness 55D Angular Misalignment 0.5 Degrees For Minimum Hub Bore 1/4 in Application Cranes Generators Mills Color White Compatible Hub Manufacturer Part Number L075 Fail Safe Yes For Maximum Hub Bore 7/8 in