ll Husqvarna tractors are equipped with premium hi-lift bagging/discharge blades. The mulch kit is required to convert tractors to mulching units. Consists of 1) a mulch plate, 2) set of mulching blades and 3) mounting hardware. Mulching kit adds mulching function to your lawn tractor Mulching is a natural way to fertilize and return nutrients to your lawn with tiny grass clippings produced Kit includes mulch plate, set of mulching blades, and mounting hardware Genuine original manufacturer part