Rackers Equipment has a “NEW” RD Olson Model #512 Aggregate Screener For Sale. This unit has a CAT C-4 water cooled engine, a remote-controlled feeder, Ball deck, a grizzly hopper and it comes equipped with two 30″ side discharge conveyors. The unit is mounted on a tandem axel 5th wheel chassis for easy transportation. Have questions? We can be reached at 573-635-8700 CST. Call us today!