This is a high-quality replacement rear axle with self-propelled motor and wheels suitable for the Husqvarna 20" lawn mower. It is made from durable plastic and comes in black color. The unit is manually powered and includes 4 items in the pack. The horsepower and item diameter can be found in the description. The item is branded and made in the United States, making it reliable and long-lasting. Perfect for your lawn mowing needs!