Plastic threaded bulb holder supplied with a cord grip and two shade rings. The E27 threaded bulb holder in black thermoplastic material allows you to use a lampshade or any decorative element with a E27 fitting, regulating its height with the use of the two ferrules.
N.B. This lamp holder has a security locking device that, in order to protect you from electrical shocks while you are changing the light bulbs, does not allow it to unscrew.
If the necessity to unscrew it should present, it is possible to unblock it by pointing at the security flap you will find at the base of the lamp holder with a screwdriver, while you are turning the lamp holder.
Always ensure the electricity is switched off when dealing with the bulb holder.