Vintage Industrial Hit-Miss Steam Gas Engine Flat Belt Pulley 4-1/2″ wide x 4-7/8″ diameter. Used Flat Belt Pulley. Very heavy duty casting. Is 4-7/8 diameter at the edge without that riveted on belting in the measurement. The diameter with the riveted belting in the measurement is approx 5-3/16. Face is 4-1/2 wide. Center hole is 1-7/8 diameter. Center hub width is approx 2 wide. Hub is offset to the one side. Has a good cut key way. The lined riveted-on belting on the face is actually in fairly good condition.