ROAD NUMBER #X-106 Expand your American Flyer layout with our colorful cabooses! Die-cast metal trucks Metal frame Interior Lighting PRODUCT SPECIFICATIONS Rail Line: Great Northern Road Number: X-106 Gauge: S Gauge Scale Type: Traditional Power: Electric Min Curve: S36 Dimensions: Length: 7" WARNING: CHOKING HAZARD - SMALL PARTS! NOT INTENDED FOR CHILDREN UNDER 3.