Tire Coupling Hub, Size - Tire Couplings WE10, Bore Type - Couplings Fixed Bore, Bore Dia. 2-1/8 In., Outside Dia. 3.65 In., Length through Bore 1.880 In., Rated Torque (In.-Lb.) 1450, Max. RPM 7500, Keyseat Size (In.) 1/2 x 1/4, Width (In.) 1.88, Height (In.) 3.65, Material of Construction Low Carbon Steel, Setscrew Location One Over Keyway, Max. Angular Misalignment 4 Degrees , Ideal For Numerous Industrial Applications, Including Pumps, Motors, Compressors