... Disc,dia.560mm 1BJ-4.4 Wing-folded Hydraulic Offset Medium Disc Harrow Description:1BJ wing-folded hydraulic offset middle-duty ... wide operation, narrow transportation, easy flapping, compact structure, high operational efficiency, convenient operation and maintenance, etc.Main Specifications: Modelunit1BJ-3.01BJ ... -9080~100100~140LinkageTrailed 1BJ-4.4 Wing-folded Hydraulic Offset Medium Disc Harrow