self contained storage bin trailers. Hold 4100 cubic ft. of any granular product such as grain, fertilizer, seed wheat, pellitized lime, Frack sand, cattle feed, cubes, anything that can flow out the hopper onto a conveyor belt. There are completely sealed and have a opening hatches on top of each bin. Has self-contained diesel motor and hydraulic pump to run the whole trailer is hydraulically operated, jacks included. Make an offer for trade or cash