This is a HO scale Rapido 127021-4 Alcan UNPX cylindrical covered hopper. It comes in eye - catching yellow and black colors, belonging to the NSC 3800 series with the number #121448. Note that the picture might show a different road number.

Using this HO scale Rapido hopper is easy. Just place it on your model railway track and let it roll. When handling it, be gentle to avoid any damage to the delicate parts. To keep it in good condition, clean it regularly with a soft, dry cloth. Store it in a cool, dry place away from direct sunlight and moisture. If you notice any loose parts, you can use a small amount of glue to fix them, but be careful not to get glue on the visible parts.