Convertible platform truck works more efficiently by transporting heavy loads, tools and supplies. Unique, three-in-one convertible design quickly transforms the bulk load capacity of a standard platform truck to the functionality of a heavy-duty, two-shelf utility cart. The 24" x 52" Platform or U-boat Truck holds up to 1,000 lb. capacity. The 24" x 44" Heavy-duty Two-Shelf Utility Cart offers a 750 lb. capacity. Push-button release latch easily provides convertibility. Unique slide locking latches prevent unintended handle removal. Duramold precision-engineered resin and metal composite structure provide unsurpassed durability and service life. Molded-in, tie-down slots and textured deck surface keep loads in place. Retainer clips prevent unintended handle removal. Handle is made of powder-coated steel for optimum service life. TPR casters provide floor surface protection, quiet operation and shock absorption. Two are fixed, and two are swivel for optimal control and maneuverability.