Built out of thick metal with little plastic, solid and well made design. Assembly took about 15 minutes with basic hand tools like adjustable wrenches. Instructions were clear and easy to follow. When folded into a stand up dolly, does not take up much space. Quick to switch between dolly and cart with strong locking mechanism. Having the function of both style tools on hand in one unit is awesome. Tires are big enough to work on the driveway unloading cases of drinks or hauling through the yard to the shed, quite versatile. Overall a good value for the price.