Three-in-one multifunctional design: The folding cart can be switched between a panel trolley, a two-wheeled upright trolley, and a four-wheeled cart without the need for tools, and after use you can easily store it in the trunk of your car, under your bed, or in a storage room. Heavy duty and durable: Our collapsible carts are made of reinforced aluminum and forged steel, with a weight capacity of 600 pounds for a four-wheeled cart and 300 pounds for a two-wheeled cart, with two universal wheels to handle any loading job. Various sizes and forms: Our 3 in 1 convertible hand truck adapts to different cargo sizes and height requirements.Folded dimensions are 37L x 15.5 W x 3.5 H,Two-wheel trailer measures 38 L x 15.5 W x 9.5 H, four-wheel dolly measures 38 L x 36.5 W x 15.5 H Ergonomic design: You can use both hands to powerfully push the folding bike no matter which form you are using, with rubber silent tires that are silent even when you are pushing on the floor. SUIT