Scale in size but simplified in detail, the return of these Standard O freight cars offers an affordable way to build up your freight trains! Die-cast metal trucks with operating couplers Removable coil covers PRODUCT SPECIFICATIONS Rail Line: Trailer Train Road Number: 81145 Gauge: O Gauge Power: Electric Min Curve: O27 Dimensions: Length: 11" WARNING: CHOKING HAZARD - SMALL PARTS! NOT INTENDED FOR CHILDREN UNDER 3.