This is set of 2 larger sized rings that work with the CB-X chastity cages. They are not sold with the standard kit sets as they
One ring is 2 1/8" and the second ring is 2 1/4". Measurement is for inner diameter of ring.
These additional rings go with any of the CB chastity devices.
The device kits themselves come with 5 rings ranging from 1.5" to 2" in diameter.
This set includes rings that are 1/8" and 1/4" larger than the largest ring in the boxed set.
Fits all CB series cages including the Curve.