Strain-Relief for E14, E27 and G9 Sockets
Strain-relief that is screwed on to the end of the sockets, so that the wires in the screw-terminals have no strain.
Equivalent products
Pipe with M10 thread
Hollow threaded pipe that is used for bulb sockets with M10 thread. The socket can be fastened with the thread and the wire can be feeded through.