Price is for 1 completeGreen/yellow/Red Railroad Dwarf Signalsfit HO scale or OO scale Pre-wired resistors for 12V or 16V use Cut off the resistor if use it on 3V DC Operating Voltage = 1.8V to 2.4VOperating Current = 18mA to 20mAprewired resistors for 12V or 16V useCharacteristic Price is for 1 complete signal Size for each : check from the photos for HO scale 1:87 or OO scale 1:76the signal head is made from cast ironBrand new ...