The MTD Yard Machines 21 Single Stage Snow Thrower is a powerful and reliable tool for clearing snow from your driveway and sidewalk. With its 4-stroke engine, this gas-powered snow thrower is designed for maximum performance and efficiency. The single stage design and 21-inch clearing width make it easy to quickly and effectively remove the snow. Whether you need to clear a small or medium-sized yard, this MTD snow thrower is a great choice.