Sure-Flex Plus Coupling Size 7 Maximum Speed 5 250 RPM Maximum Torque 2 875 in-lb Outside Diameter 4 11/32 in Insert Construction 1-Piece Solid Angular Misalignment 0.25 Degrees Horsepower @ 100 RPM 4.6 hp Insert Material Hytrel Insert Width 2 3/16 in Parallel Misalignment 0.012 in System of Measurement Inch Torsional Stiffness 20 000 in-lb/rad Application Compressors Conveyors Electric Motors Fans/Blowers Mixers Pumps Maximum Operating Temperature 250 Degrees F