The cars have special close couplings with guide mechanisms

This is a Walthers 949-2500 HO Undecorated 40' Trailmobile Trailer Kit (2)

Frequency response: 550 – 7k Hz

The Trainz SKU for this item is P12455509

MTH 30-73562 O DuPont Tank Car #6418 ProductNumber2_25530 The cars have special closeThis is a MTH 30 73562 O Scale DuPont Tank Car #6418. Features: Intricately Detailed, Durable ABS Body, Diecast Metal Chassis, Metal Wheels and Axles, Diecast 4 Wheel Trucks, Operating Diecast Metal Couplers, Decorative Brake Wheels, Separate Metal Handrails, Fast Angle Wheel Sets, Needle Point Axles, Unit Measures: 10 3 8 x 2 3 8 3 13 16, Operates On O 27 Curves Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9)