T.Y.S Lighting 1 Light Vintage Edison Hanging E27 Socket Minimalist Retro Lamp Base Holder 3.74ft Pendant Light Fixture (Bronze With Pull Chain) This is electrifier medium base copper shell lamp holder With HARD PAPER in the socket inner, Seismic and Impact resistance Base: E27/E26; Wire of Length:3.74ft; Cap is 1/8" threaded for lamp nipple with set screw Voltage: 110V-250V