Lovejoy 69790443783 Steel Hercuflex FX Series 43783 FX 4.5EM Hub, Rigid, 2-1/2" Bore, 9.09" OD, 5.31" Length Through Bore, 5/8" x 5/16" Keyway, 427460 Inch Pounds Item Torque

                The Hercuflex coupling has increased nominal torque, larger maximum bore size and longer service life. It is interchangeable with standard AGMA flange interface.