If you take the photo to your local plumbing supplies emporium, or even the local brico shed, they should be able to advise you on the best equivalent, using the necessary component parts…
Personally, I doubt you’ll find that exact thing.
Try Le Roy Merlon. They are not cheap but have a lot of connections for plumbing that most run of the mill hardware places don’t have. If you don’t find that fitting pre made they do have the connections to achieve what you ultimately want. Good luck