Tire Coupling Hub, Size - Tire Couplings WE5, Bore Type - Couplings Fixed Bore, Bore Dia. 1-1/8 In., Outside Dia. 3.13 In., Length through Bore 1.750 In., Rated Torque (In.-Lb.) 925, Max. RPM 7500, Keyseat Size (In.) 1/4 x 1/8, Width (In.) 1.75, Height (In.) 3.13, 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