UNION PACIFIC W/COAL LOAD PROTOTYPE AND BACKGROUND INFO: Open hopper cars are used for commodities such as coal, which can suffer exposure with less detrimental effect. Hopper cars have been used by railways worldwide whenever automated cargo handling has been desired. This type of car is distinguished from a gondola car in that it has opening doors on the underside or on the sides to discharge its cargo. The development of the hopper car went along with the development of automated handling of such commodities, with automated loading and unloading facilities. FEATURES: Fully-assembled and ready to run out of the box Highly-detailed, injection-molded body McHenry scale knuckle spring couplers installed Painted and printed for realistic decoration Weighted for trouble free operation 33" machined metal wheels with RP25 contours operate on all popular brands of track Body mounted McHenry operating scale knuckle couplers Window packaging for easy viewing plus interior plastic blister safely holds the model for convenient storage Replacement parts available Minimum radius: 18" WARNING: CHOKING HAZARD - SMALL PARTS! NOT INTENDED FOR CHILDREN UNDER 3.