Flexible connecting hose between tank cars

Here is a MTH 20-67118 VIA 70' ABS Full Length Vista Dome Passenger Car (Smooth)

The head mark is different for each set

Model Number: 6-27142

Model Number: 5093

Lionel 6-28568 O Gauge Union Pacific GP-7 Non-Powered Diesel Locomotive #106 ProductID_11509659 Flexible connecting hose between tankHere is a Lionel 6 28568 O Scale Union Pacific GP 7 Non Powered Diesel Locomotive #106. This non powered UP diesel locomotive features diecast metal trucks, pilots and fuel tank, front and rear operating couplers, and operates on an O 31 minimum curve. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Lionel Model Number: 6 28568 Years Manufactured: 2007 ???? Road Name: Union Pacific (UP) Scale Era: O