'Tire Coupling Element, Size - Tire Couplings WE20, Rated Torque 2300 in.-lb., Max. RPM 6600, HP Rating @ 100 RPM 3.65, Outside Dia. 7.36 In., Insert Material Polyether Urethane/Steel, Insert Design Standard, Length 4.24 In., Height 7.36 In., Operating Temp. -40 Degrees to 200 Degrees F, Application Numerous Industrial Applications, Including Pumps, Motors, Compressors'