Building carts can have various volumes of the body, one or two wheels that can be both the same and different. Their body is most often made from a durable steel sheet that ensures a long service life of the cart. Around the perimeter, the body can be wolled with additional reinforcement, which increases the strength and carrying capacity of the cart. Tails for carts can have a different principle of action. Pneumatic systems provide silent movement, smoothness and softness. In addition, a distinctive feature of pneumatic wheels is the provision of the possibility of transporting goods easily on complex surfaces, such as uneven soil, crushed stone or sand.