Sure-Flex Plus, Coupling Size 6, Maximum Speed 6,000 RPM, Maximum Torque 1,800 in-lb, Outside Diameter 3 3/4 in, Insert Construction 1-Piece Solid, Angular Misalignment 0.25 Degrees , Horsepower @ 100 RPM 2.9 hp, Insert Material Hytrel, Insert Width 1 7/8 in, Parallel Misalignment 0.01 in, System of Measurement Inch, Torsional Stiffness 10,000 in-lb/rad, Application Compressors, Conveyors, Electric Motors, Fans/Blowers, Mixers, Pumps, Maximum Operating Temperature 250 Degrees F Offering clean, dependable, quiet performance, this low-maintenance sleeve coupling insert is easy to install. The 4-way flex absorbs shock, misalignment, and end float. No lubrication is required. Use it with other Sure-Flex(R) Plus coupling components, available separately, for a complete assembly.