Wooden Mobile Storage Cabinet rolls on  four 3" ball-bearing swivel casters with brakes. The cabinet is finished with a chemical resistant, earth-friendly UV finish.  Product includes 1 1/4" black plastic laminate top to act as a work surface. Shelves have a capacity of 40 pounds per square foot. Legs are 2 1/4" square and are securely fastened to the 4 1/2" high apron with factory installed 5/16" hanger bolts through the heavy-duty 13 gauge steel corner braces. Product also includes leg stretchers.