Even if there are different sizes of taps, they still follow global standard. We have developed the Altered:Nozzle to fit in the smallest standard tap, and then we include adaptors to fit with larger ones.
Size dosen't matter
The only thing you need to check is if you have a socket at the end of your tap that you can unscrew. If you do, you are golden.
If you don’t, you have a version called caché, where the plastic aerator is screwed right in to your tap. In that case you’ll need to add a socket to your tap. You can buy that in your hardware store, or contact us, but it means a bit more of a hassle.