All walls and major assemblies have tab-and-slot construction

Model Number: 17331

The cars have close coupler hooks and each car has different interior details

This is a K-Line by Lionel 6-22231 O Ringling Bros

MTH 30-74857 O Gauge Chessie RailKing Boxcar with Blinking LEDs ProductID_11618334 All walls and major assembliesThis is a MTH 3074857 O Gauge Chessie RailKing Boxcar with Blinking LEDs. This 40' box car features bright, flashing LED lights on both sides of this car spaced behind the printed railroad cross buck touting one of railroading's most important safety message! Each LED flashes alternately, just like a real railroad cross buck and is sure to catch the attention of all who see it on your own O Gauge model railroad. Completely assembled and ready to run.