Tire Coupling Hub, Size - Tire Couplings WE60, Bore Type - Couplings Plain Bore, Bore Dia. 1-1/8 In., Outside Dia. 8.75 In., Length through Bore 3.250 In., Rated Torque (In.-Lb.) 12,500, Max. RPM 3800, Keyseat Size (In.) None, Plain Bore, Width (In.) 3.25, Height (In.) 8.75, Material of Construction Low Carbon Steel, Setscrew Location One Inside, Max. Angular Misalignment 1 Degrees , Ideal For Numerous Industrial Applications, Including Pumps, Motors, Compressors