Price is for 1 XDual Heads 3 over 2 Railroad SignalsGreen/Yellow/Red over Green/RedO scale 1:48made of LEDs & prewired resistors for 12V or 16V use you may cut the resistor from the wire if you need to use it on 3V Characteristic Price is for 1 units Size for each : Approx. 135mm or 5.31' inch Height for O scale 1:48 the signal head is made from Plastic Brand new PRODUCT DESCRIPTION Your station platform or street scenes will be more lively with these items.Perfect for Model Train Set Landscape...