KINGSO E26/ E27 Solid Brass Industrial Light Socket Metal Shell Vintage Edison Pendant lamp copper holder With Knob (Red Bronze) This is electrifier medium base copper shell lamp holder For wire and E26/E27 screw light bulbs and lamps connected, power lighting, display fixtures. Very Great for quality; Saves electricity-extends bulb life These lamp holders are ideal for bare bulb features with E26/E27 Edison Screw Bulbs With hard paper in the socket inner, seismic and impact resistance