CLUTCH BELL FOR BRUSH CUTTER P 270Z - P330Z - P 340Z - P 410P - P 470Z - P 540Z - P 590Z INNER BELL diameter: 54mm PIN OUTER diameter: 15mm PIN LENGTH: 58mm COUPLING TYPE: SQUARE INTERNAL COUPLING DIAMETER: 7.7mm BLUE BIRD - ZANE' Code: 001981 Original code: 752440 AT