BA-22

About the scrotum pressing ring.(actually it is a kind of scrotum bar I mentioned on other customized chastity cage) Its function is to narrow the diagonal gap/ball gap prevent ball slipping out,prevent ball escaping from the base ring.

You can see the 5th profile picture,if penis tube diameter is too small but base ring diameter is big,then the diagonal gap from base ring bottom to penis tube bottom (,for example,this diagonal gap is 25mm or 30mm,then this size can let ball escape easily) so this kind of cage is not secure enough,but with this scrotum pressing ring,you can see how it narrow the gap,for example,to make the diagonal gap 12mm now,then ball can’t escape from this narrow gap.

Of course,this scrotum pressing ring squeeze the scrotum as well, you need to consider if it is necessary or not,if you don’t need it become scrotum pressing ring,then its size would be as big as penis tube,just like it in BA-25 cage.
 

Must Read This Page Before Customization（Click The Below Link)
You can know what all the nouns refer to, the dimensions that can be customized, and the accessories you can add for a cage such as PA hook,etc.
https://bawrpro.com/pages/all-about-chastity-cage-customization

The below 3 sizes is must needed:

1.Chastity Cage Overall Length

2.Penis Tube Inner Diameter 

3.Base Ring Inner Diameter
 

Warm tip: if you are not very sure about the base ring diameter or want to try one more size of base ring,you can choose "cage with 2 base ring" to place the order.