MODEL FEATURES: : Precision die-cast metal spine structure Etched metal walkways Separately applied brake piping Fine ladder detail Weighted for optimal performance McHenry scale knuckle spring couplers installed 33” solid nickel silver wheels with RP25 contours operate on all popular brands of track Trailer hitches come separately in raised and collapsed configurations so the customer can apply them to the model to suit their preferences Minimum radius: 20” PROTOTYPE AND BACKGROUND INFO:: The prototype for our model is based on a Trinity-built car owned by the TTX Company. These 70-ton cars (TTX class RAF30A) numbered TTRX 360817-361116 first appeared on the rails in the late 1990's. The Athearn model is faithful to the prototype allowing modelers to load a variety of trailers and containers.