MiniSun
MiniSun E27 to B22 Lampholder Converter MiniSun 15767
£5.04
https://www.bltdirect.com/ Go to shop Description
A simple and effective way to install a BC light bulb into an ES lamp holder this functional converter does just that. This Edison Screw to Bayonet Cap Lamp Holder Converter enables the use of BC light bulbs in existing E27 fixtures