Necessary were only the side brushes, since the old ones were pretty frayed. These fit perfectly and are easy to replace with a screwdriver. 1 star deduction, because there is only the combination of side brush and filter. The filter life is considerably longer than that of the brushes. Toll would be the possibility of an "either-or" -Order, that would be cheaper and you would get just exactly what is really necessary. The brushes I bought VR6170LVM Suction robot for the LG.