The STIHL 69090071056 Mulching Kit is an original equipment manufacturer (OEM) accessory designed to convert compatible STIHL RM 650 series lawn mowers into mulching machines. This kit includes the necessary components to allow the mower to finely shred grass clippings and return them to the lawn as natural fertilizer, promoting healthier turf and eliminating the need for bagging. It ensures optimal mulching performance and is a genuine STIHL part, guaranteeing compatibility and durability with your STIHL equipment.