Bachmann 00664 HO Yuletide Special Christmas Train Set with 4 Extra 9 Straights. Comes with 4 extra 9 straight tracks for bigger layouts. Get ready for the holiday season with the Bachmann 00664 HO Yuletide Special Christmas Train Set. This set includes everything you need to create a festive train display, with a locomotive and three cars decorated in a cheerful Christmas theme. Measuring 9 inches in length, the train runs on HO gauge tracks and comes with four extra straight tracks for customization. The set is ideal for collectors and hobbyists interested in model railroads and trains, and is sure to add a touch of holiday magic to any home or display.