Chrome Wire Shelving Dolly Base Enclosure Carts are an effective way to keep contents from moving or falling off during transportation. The rods and tabs are adaptable to any shelf position and act as a perimeter to retain product. Dolly Base allows for heavier load transport. Units consist of 4 - posts, 4 - wire shelves, 1 - solid shelf, 4, 5 or 6 - rods & tabs kits, 1 - dolly base, 4 - plate casters (2 rigid and 2 swivel with brake).