What is this shower head?
Years ago I purchased a shower head that at the time was called "The Big Head" and I loved the shower experience. Fast forward to today and I searched for a similar replacement. I found the same shower head but it now is a "water saving" model; same design slightly less water. I bought 2 and I think they are great. It is made by delta with a model 52650-PK and can be purchased at any store that sells Delta products . I bought mine at Home Depot using the Delta #52650-PK for around $15.00. When I built my house 21 years ago, one of the showers had that same head you are looking for, and I replaced it with the one mentioned above. I like the new one better.  my 2 cents