KINGSO 4 Pack E27 Socket Screw Bulbs Edison Retro Pendant Lamp Holder With Wire Without Switch 110-220V (Silver) Pack of 4 E27 Socket Edison Retro Pendant Lamp Holder With hard paper in the socket inner, seismic and impact resistance Material: Aluminum + Iron These lamp holders are ideal for bare bulb features with E27 Edison Screw Bulbs VARIOUS FINISHES AVAILABLE - LOADS MORE IN OUR SHOP!