Grid Coupling Hub; 1-1/8" Bore; 2-1/4" Hub Diameter; 2.97" Flange Outside Diameter; Shaft; Finished Bore; Keyway; 2" Length Thru Bore; 2.97" Overall Diameter; 1040T Size or Series; No Bushing; Steel; 6000 Max Speed; 2200In-Lbs Torque