Package included: 1.10 Complete lamps. 2.10 Resistors (not pre-soldered) for 9~18V operation. Specifications: 1.Size: Approx. 6.5cm(H) or 2.56''(H) Inch. 2.Reference Scale: 1:76~1:100,Suitable for OO scale or HO scale etc.... 3.Operating Voltage: 3V, AC or DC Compatible. 4.Operating Current: 20mA. 5.Material:Coppery Column Model Lampposts. 6.Emitting color: White. Features: 1.100% Brand new and high quality. 2.Perfect for Railway & Building Layout! 3.Made with white LEDs. 4.Complete with wires and LEDs and can be lighted. 5.These Lampposts are suitable for use at supply voltages of 3V only. 6.DO NOT use them on 12V or 16V directly to avoid damaging the LED. 7.You must connect a resistor in series before you will use them on 12V or 16V, I will supply compatible resistors for free. 8.Please apply correct Operating Current 20mA to each LED too.