The polyethylene dish caddies prevent dishes from chipping during the transport and the external and internal rounded corners protect. Adjustable dividers allow dollies to hold plates: use 2-4 dividers for 254 mm or larger plates, 6 dividers for 203-248 mm plates. The casters, two 127 mm and two 254 mm. Make a very easy handling. All these caddies are shipped already fixed and with a vinyl hygenical cover.