About the Wesco Folding Platform CartThe Wesco Folding Platform Cart features a compact steel frame suitable to a variety of busy environments. Sturdy casters and a spacious vinyl top eliminate the strain of carrying heavy loads. Vinyl bumpers alon g the edges offer great protection during transport. Fold up neatly for easy storage when not in use. Available with several caster wheel sizes to fit your specific load-carrying needs.4-inch casters - 275-lb. capacity 5-inch casters - 400-lb. capac it