I just bought a shower head from Amazon (Chinese seller I think). As soon as I received it I removed the old one and tried fitting it in. But it cannot be screwed in. The diameter seem identical to the old one with my bare eyes. But the old one screws in easily and this one stops after one turn. I tried cleaning the threads with a toothpick, adding some WD40 and it does not get any easier. Do I need a connector? How universal are the connector widths?
I have added pictures.
ps: It is not easy to force as the disk part can spin 360 degrees around the connector, hence I have preferred not to force for now.
Link to the item I purchased if it helps: https://www.amazon.co.uk/gp/product/B07SSZ9RH7/