Stack trains are the hottest things on rails today. Add colorful intermodal operations to your layout with these new cars! With a die-cast well body, these cars will track well despite their high payloads. Die-cast body Die-cast trucks with rotating bearing caps Die-cast operating couplers with hidden tabs 2 removable containers with opening doors PRODUCT SPECIFICATIONS Gauge: O Gauge On the real railroads as well as the toy trains, gauge refers to the distance between the outside rails of the track. Lionel O gauge track systems-which include O, O-27, and FasTrack® all measure 1 1/4" between the outer rails. Any O gauge car or locomotive can ride on Lionel O Gauge track, as long as the curve track used on your layout can accommodate your particular cars (see Minimum Curve section). Lionel S gauge track (AF FastTrack) is narrower than O, and supports American Flyer and other S gauge cars. Scale Type: Traditional Power: Electric Min Curve: O31 Dimensions: Length: 16 3/8"