Disc harrow: (Receiver Mount System)Perfect helper for getting the job done easier, more convenient way with your ATV, UTV or SSV machine ! Disc harrow to break up hard soil, dry grass and turf, chop weeds or other soil preparation work. Working width 55" 1400 mm ( adjustable ) To use with IRON BALTIC Receiver Mount system (p n 84. 1050US or 84. 1000). 14. 3 " 365 mm diameter spherical discs Adjustable angle of the dics in between 30 and 30 degrees.