Have owned this for more than 50 years. It is a 20' John Deere spring tooth harrow on a two wheel hydraulic operated folding carrier made by Burrell Manufacturing company of Lindsborg, Kansas in probably the 1960's. This model of carrier was invented on the farm near Frederick, Kansas in the 1950's. He later sold the patent which he obtained, to the manufacturing company in Lindsborg. It was quite popular for a few years but the Crustbuster model developed in western Kansas became the favorite of the farmers which led to the dimise of the Burrell model. It is complete and in good shape. Asking $150.