Model: The sliding tarp cars have closed tarps. The flat cars with telescoping covers have fixed end walls and 3 each sliding telescoping covers. Inside the cars are 5 load cradles with movable load restraint arms. 3 each coils are included with the cars. All of the cars have different car numbers and are individually packaged. There is also a master package.Length over the buffers per car 13.8 cm / 5-7/16".DC wheelset E700580.