the plug is a good idea - and I bought it for environmental reasons, so that you can continue to use the old chargers, etc.. unfortunately it costs as a plug almost as much as a new charger, but that's another topic. the connector works! which is positive is less positive that the plug is loose right, thus preventing connection problems, or the connector is self-triggers stress higher.
Here I would like to see a tighter fit, but also understand that the manufacturers would rather be on the safe side, before the plug is too small.
you only get a plug! what I knew anyway, but the image can be deceiving.