This is a drive over conveyor, the type commonly used to unload grain, Corn, Rice, small gravel or any other small sized commodity. It is similar, but not an exact representation of a Sudenga type unloader. The ramps will fold up and down, as well as the wheels being positionable for towing or set flat on the ground for unloading operations. As with all moving parts, there may be some fine tuning for the final operation due to paint thicknesses etc. This piece is offered in the frosted detail materails only, as I won't compromise detail. Should there be an issue contact me via the designer link or direct via Email at email@example.com Also, be sure and 'follow' me as a designer to ensure you can find what you want in my shop, and be on top of the latest releases.