This is a 3-pack of HO scale ATLAS Master 20006901 Trinity 25,500-gallon tank cars. The cars are numbered NATX #250951, 250972, 250986 and have a black and yellow UTCK repaint. Note that the picture might show a different road number. Atlas' model is an insulated, general-purpose design introduced in 1986 and still in production today. There are over 13,000 in service. They're used to carry various commodities like vegetable oil, tallow, styrene, benzene, asphalt, biodiesel, acrylates and many other chemicals. Key features include accurate painting and printing, lots of detailed fittings specific to the prototype, a highly detailed body with prototypical jacket seams, and see-through walkway and top platform grating.

Using these HO scale tank cars is easy. Just place them on your model railroad tracks to add a realistic touch. When handling them, be gentle to avoid any damage to the detailed fittings. To keep them looking great, use a soft, dry cloth to gently dust them off regularly. Avoid using any harsh chemicals or cleaners as they could damage the paint and details. If you notice any loose parts, handle them carefully and you might be able to reattach them. Keep them in a dry place away from direct sunlight to prevent the colors from fading over time.