The reinforced adicam MAX+ Film Cart can support up to 551 lb of equipment. The design of the cart features a crossbar between the legs to provide additional stability and the ability to mount a 35mm tube/tripod without removing the top cover. Releasing locks on the top shelf allows the edge to fold down for working with a laptop or keyboard. The cart components fit into the base/bottom shelf, holding the 10" pneumatic wheels and riser tubes, and the top flips over and then locks using the black latches. Integrated wheels help you roll the "folded" cart for transport when not in use.