Hytrel Spider Insert Coupling Size L070 Outside Diameter 1 23/64 in System of Measurement Inch Maximum Speed 14 000 RPM Horsepower @ 100 RPM 0.18 hp Spider Material Hytrel Maximum Torque 114 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 L070 Fail Safe Yes For Maximum Hub Bore 3/4 in