This tunnel was designed to fit Lionel O Scale train track. It's a clean, simple print that drops right into your layout. I based it on a multi-scale tunnel portal but resized it specifically for O Scale. You can easily scale it up or down to use with other gauges like HO or N, depending on your layout needs. The Model Train Tunnel O Scale Model Railway Building is a plastic tunnel designed for O gauge model railways. This collectable accessory is perfect for enhancing the layout of your model railway, adding an element of realism and detail to your display. The tunnel allows your trains to pass through, creating a realistic and immersive experience for collectors and enthusiasts alike.