Brute ® Tandem Dolly. Customize the dolly with two Brute ® containers in mix-and-match sizes; even combine round and square containers. Heavy-duty 8" wheels and four 4" swivel casters. Innovative center hinge design and fixed wheels help transport uneven loads smoothly. Use with Brute ® containers (sold separately). 20-1/2" wide x 45" deep x 8" high. Black.