1-10X B22 To E27 Light Socket Converter Adapter Bayonet Lamp Base E27 Bulb Screw
This adapter allows you to use a Edison Screw Light Bulb in a Bayonet Lamp Socket. These are great to make use of those bulbs that have a screw fit and you want to pop them into a bayonet fixing. Nicely made and useful adaptor to have.