Convertible design: By sliding the handle out of one set of tubes and into another, the trolley can be converted from a two-wheeled trolley to a four-wheeled platform, which can meet your different needs in different environments.Heavy-duty construction: Made of sprayed metal, the platform car has a durable welded structure with high strength and is not easy to deform. A 2-wheeled trolley can handle up to 220 pounds of capacity, and a 4-wheeled platform can handle up to 330 poundsHigh quality wheels: Equipped with two 8.25-inch pneumatic tires and two 2-inch cardan casters, they can be used thousands of times without damage or distortion, and run smoothly regardless of the load.Easy to assemble and carry: Just install four wheels and follow the instructions to complete assembly in a short time. With a minimum height of 37 inches, the two-wheeled trolley is easy to carry and store.Multiple applications: Widely used for indoor and outdoor loading and unloading or moving, such as warehouses, gardens, construction sites, hypermarkets, offices.