The Ariens 71516000 Gravely Mulch Kit Edge 42 Zero Turn Lawn Mower is a steel mulching kit designed for zero turn lawnmowers with decks. This kit includes one 30″ long, 6″ high, and 30 wide piece of mulch to help keep grass clippings off the ground and prevent them from blowing away. This high-quality mulch kit from Ariens is a reliable and durable accessory for maintaining your lawn.