This is an Atlas 2 rail 50 ton coal car. All the descriptions are found in the pictures.The coal is permanent by; Arizona Rock Co. They make the best ballast and coal money can buy as they mine their own stone. Compatible Atlas Kadee couplers. As you'll see in the pics, the doors are hinged and open on the bays. Original box of course and this guy weighs in at 1.6 pounds and will be a nice addition to your fleet. TY for looking and any questions feel free to write .