The Harper Nylon SR 2-in-1 Convertible Hand Truck combines the practicality of a hand truck and the added versatility of a four-wheeled cart. The frame is made of glass-filled nylon, which offers a low weight, reliable strength, and durability. The Harper Nylon SR 2-in-1 Convertible Hand Truck will assist with a variety of jobs around the warehouse, office, garage, or any place you need to move heavy loads. * Glass-filled nylon makes this truck lightweight and chemical- and corrosion-resistant * Stair glides assist with movement up and down curbs and stairs * Steel toe plate will handle your loads so you can work confidently * 600-lb. capacity means this truck is built to handle heavy loads * 10-inch wheels in pneumatic or solid rubber * Two swivel casters in cart mode allow for controlled movement even in confined areas * The frame is completely preassembled at the factory About Harper Trucks Harper is the world"s largest manufacturer of hand trucks. Enough said? They"ve grown since 1940 from a small metal fabricator to global experts in getting things from point A to point B. You"ll find both the best in tried-and-true designs and continuing innovation from this unique manufacturer, and a name you can trust. * Converts quickly and easily from vertical hand truck position to horizontal cart position * Flow back handle lets you grip where it"s comfortable and assists with load-breaking * Cart position can accommodate much bulkier loads * This hand truck is proudly made in USA * Swivel caster dimensions: 5 x 1.25 inches * Nose plate dimensions: 14.5W x 7D inches * Bed dimensions: 37.25L x 12W inches * Overall dimensions: 21W x 19D x 49.5H inches