Base type: E27. 1 x E27 Lamp holder as your choice. They could assemble to a socket and cord for a hardwired lighting with an exposed bulb for an early 1908s era feel. Portable E-27 screw-on bulb holder.
Fdit E27 Socket Adapter E26/E27 Vintage Industrial Ceiling/Wall Light Base Holder Pendant Bulb Lamp Screw Socket(Gold)
Fdit E27 Socket Adapter E26/E27 Vintage Industrial Ceiling/Wall Light Base Holder Pendant Bulb Lamp Screw Socket(Bronze)
E27 Vintage Industrial Light Bulb Lamp Holder Antique Retro Edison Fitting UK
E27 Vintage Industrial Lamp Holder Retro Edison Bulb Pendant Light Fitting UK
E27 Vintage Industrial Edison Lamp Holder Screw Bulb Fitting Antique Retro Light
1 m, 2m Ceiling Light Fitting E27 Vintage Industrial Pendant Lamp Bulb Holder UK