Price is for 1 XYellow/Green/Red Railroad Signals( Yellow On Top Version )HO scale 1:87made of LEDs with resistors and ready for 12V or 16V use you may cut the resistor from the wire if you need to use it on 3V CharacteristicPrice is for 1 unitsSize for each : Approx. 63.5mm or 2.50' inch Heightfor HO scale 1:87the signal head is made from PlasticBrand newPRODUCT DESCRIPTION Your station platform or street scenes will be more lively with these items.Perfect for Model Train Set LandscapeControl them automatically by moving train ( click here ) Control them manually ( click here )...