This rolling cart is so poorly designed that I feel obliged to leave my first negative product review. The cart is impossible to assemble. The black rings that hold up the shelves do not work correctly and won't stay in place while the shelves are pounded on to them (pounding is definitely required.) The first assembly instruction is to attach the wheels to the end posts but I can't help feeling that pounding shelves down on to a stable, motionless surface would have been an improvement. The wheels work great and the cart looks fine but mine is being held together with duct tape. I cannot recommend this product.