This is a Scaletrains SXT32125 CW Custom Weathered Multi - Max Autorack in HO Scale, numbered BNSF #693970. The last picture shows the car before weathering, giving you a clear view of its original state.

Using this Scaletrains autorack is easy. Just place it on your HO scale train track and connect it with other train cars. When handling it, be gentle to avoid any damage to the weathered details. To keep it in good condition, clean it regularly with a soft, dry cloth. Store it in a cool and dry place away from direct sunlight and dust. If you notice any loose parts, handle them carefully and consider using a small amount of glue to fix them.