The 48 gallon Tumbling Composter speeds up composting, saves effort in turning backyard waste into compost. Internal aeration accelerates process to make compost in 3-4 weeks. Composting reduces the amount of organic waste that goes into trash collection and landfills. Compost contains a full range of essential plant nutrients and decrease need for fertilizers. Compost alters soil composting, making it less likely to erode and easier to work. The Tumbling Composter comes 60-percent pre-assembled.