60s Industrial Tanker Style Tol Base Cast Iron Caseium Cart Trolley. The casters are made from steel to hold the weight of the cast. There is one door with 2 shelves on the interior. The sides have pockets to place items in. Within these pockets there is a hole in each side to slide a hoes or complimentary item to extend out the sides instead of the back. The top of the cart is a sheet metal with many small holes. The top holes lead to a compartment underneath the sheet that has another hole larger hole as shown in the images. That may be some sort of drain or acces point.