Sure-Flex Plus, 11 Size - Sleeve Couplings, Flange Type - Sleeve Couplings H, Insert Design - Couplings One-Piece Solid, Material - Inserts Hytrel, Rated Torque 18,000 in-lb, Max. RPM 3,600 RPM, HP Rating @ 100 RPM 28.6 hp, Outside Dia. 8.19 in, Width 4.0 in, -65 Degrees to 250 Degrees F, Blowers, Compressors, Conveyors, Mixers, Motors, Pumps