I would say 5 but not sure if my partner would use it. I have had interest in the Gates Of Hell for many years.

I am terribly confused by these products.

I think 3 or 4 rings is sufficient. After 4 it just seems like a pain to get on and off.

They are basically chastity toys. Slips behind the testicles. And the penis goes through the rings. Then if you get an erection it pushes on the rings and prevents an erection and causes pain.