That's a pea sheller. It uses two rollers similar to a old wringer type washing machine but they are smaller. They are about 3/4 inch are covered with rubber hose. I should have shown the shelled peas. I will try and share some more pictures later. I use two old JD 4020 LP gas tractors and old equipment retired from the farm. I do have a older Troybuilt Horse Tiller I use mostly for cultivating the middles.