MTD 121-940 is a self-propelled rotary mower with a durable build that makes it suitable for commercial use. It comes with a 22-inch blade and a powerful engine that enables efficient cutting of grass and weeds. It also has an adjustable cutting height, which allows you to customize the length of your lawn. Additionally, the mower features a discharge chute that directs clippings to the side, reducing the need for frequent emptying of the grass catcher.