The Cantilever Stockpicker truck design allows for oversized packages to fit conveniently on the bottom shelf without restricting access to the packages. Eliminate the need to move around a clumsy ladder and push a cart while trying to stock or un-stock shelves. The step ladders are spring loaded to hold the cart securely in place while a person is standing on the ladder. Two rigid and two swivel 4" x 1-1/2" Poly-on-Poly casters standard. Total uniform capacity is 440 lbs. per cart, uniformly loaded.