The Lionel 6-5702 O-27 National Dairy Despatch Woodside Reefer is a pre-built refrigerator car designed for use with a three-rail system. Made of plastic and featuring a multicolor design, this O-27 gauge model is a great addition to any model railroad collection. With the Lionel brand known for its quality and attention to detail, this ready-to-go reefer car is sure to enhance the realism of your train layout.