It is made of heavy-duty steel, which makes it durable and able to withstand the wear and tear of regular use. The cart has a large top compartment with two doors and a smaller bottom compartment with multiple drawers that can be used to store and organize tools and parts. The drawers are typically lockable, which provides added security for your tools. A rolling trolley is a type of cart with big wheels that can be used to transport tools or other items around a workshop. Four wheels and handle on one side make it easy to move the cart around, even when it is fully loaded.