Sure-Flex Plus Coupling Size 8 Maximum Speed 4 500 RPM Maximum Torque 4 530 in-lb Outside Diameter 5 1/16 in Insert Construction - New 1-Piece Solid Angular Misalignment 0.25 Degrees Horsepower @ 100 RPM 7.2 hp Insert Material Hytrel Insert Width 2 1/2 in Parallel Misalignment 0.015 in System of Measurement Inch Torsional Stiffness 30 000 in-lb/rad Application Compressors Conveyors Electric Motors Fans/Blowers Mixers Pumps Maximum Operating Temperature 250 Degrees F