MTD 123-479H000 is a 21" rotary mower that is perfect for maintaining smaller yards. It is powered by a gasoline engine and has a cutting height range of 1.25" to 3.75". The mower also features a mulching capability, which allows you to recycle grass clippings back into your lawn as a natural fertilizer. Additionally, it has a self-propelled drive, which makes it easy to maneuver around your yard. Overall, the MTD 123-479H000 is a versatile and user-friendly mower that is perfect for homeowners who want to keep their lawns looking their best.