Price is for 1 complete1 + 1 dual heads searchlight SignalO scalemade of triple colors SMD LEDs with resistors and ready for 12V or 16V DC use with screw base for easy installationDefault: common anode signals.you may inform me via the note when pay if you need common Cathode signal. CharacteristicPrice is for 1 unitsSize for each : please check from the photofor O scale layoutsthe signal head is made from PlasticBrand new...