Sure-Flex Plus, 8 Size - Sleeve Couplings, Flange Type - Sleeve Couplings HS, Insert Design - Couplings Two-Piece Split, Material - Inserts Hytrel, Rated Torque 4,530 in-lb, Max. RPM 4,500 RPM, HP Rating @ 100 RPM 7.2 hp, Outside Dia. 5.06 in, Width 2.5 in, -65 Degrees to 250 Degrees F, Blowers, Compressors, Conveyors, Mixers, Motors, Pumps