Another typical Example of some stupid productsthat is dead simple but does not do it's job. The people who made this have 1 thing to do: put a E27 bulb into the socket and see if it fits ... that's very hard isen't it. So the socket is for E27 bulbs but the screw is not the same, your lamp gets stuck in the middle and does not come out anymore. Really dangerous to force it out and do not break it.