XIANQI This screw-based lamp extender is the best choice for yourself or your friends This GX24Q to E27 bulb is suitable for GX24Q to E27 sockets, physically changing the contacts without changing the voltage If the holder socket converter is a ballast in the luminaire This LED light lamp adapter one is used to replace standard screw-based lights with pin-based sockets You need to remove LED light lamp adapterwhen replacing the Pin-based bulb with an LED E27 bulb Colour: white Product includes: 1pc Size: 5cm Notes: Please allow 1-3cm error, due to manual measurement, please make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual colour of the item. Thank you for your support!