CLUTCH BELL FOR BRUSH CUTTER OM BACKPACK EFCO 220 260 THREADED INNER BELL diameter: 58mm PIN OUTER DIAMETER: 12mm PIN LENGTH: 24mm COUPLING TYPE: LEFT THREADED INTERNAL DIAMETER COUPLING: 7x1.25mm EMAK - OLEOMAC - DYNAMAC - EFCO Code: 007734 Original code: 4160056 AT