Price is for 1 complete Cantilever bridge signalsfor double tracks ( left side use )prewired LED for 3 aspects( Green on top / yellow in middle / Red at bottom ) Characteristic Price is for 1 units Size for each : Check from the photo Operating Voltage: prewired resistor for 12V to 16V use Operating Current = each LED 20mA Metal Made and Brand new PRODUCT 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 )...