Hub, Elastomeric Coupling; 2-1/8" Bore; 6.35" Outside Diameter; 3-5/8" Hub Diameter; Flanged; Finished Bore; 2-13/32" Length Thru Bore; 9S Size or Series; No Bushing; Keyway; Cast Iron Material; 3750 Maximum Speed; TPR 1800 | Hytrel 7200In-Lbs Torque