Porcelain Industrial wall lamp. White porcelain, brass and cast iron Clear glass. 2 conductors, no ground. Diameter wall mount 10.5 cm / 4” for use inside only. Depending on destination, all our lights are rewired with new CE certified (220 volt) or UL Listed (110 volt) wire. Excluding light bulb. Up to 250V (Europe/UK Standard).The wiring of this item may be original and might need replacement, if not specified otherwise.