'Tire Coupling Hub,Body Style WE4,Bore Dia. (In.) 1-5/8,Length through Bore (In.) 1.69,Rated Torque (In.-Lb.) 550,Max. RPM 7500,Keyseat Size (In.) 3/8 x 3/16,Outside Dia. (In.) 2.6,Width (In.) 1.69,Height (In.) 2.6,Hub Dia. (In.) 2.6,Material of Construction Low Carbon Steel,Setscrew Location One Over Keyway,Max. Angular Misalignment 4 Degree,Ideal For Numerous Industrial Applications, Including Pumps, Motors, Compressors'