Cockcage U Ring Large Black

Replacement Black U Rings for all CB X chastity devices, these U-Rings are compatible with all models and spare parts. A CB X complete kit includes U Ring sizes  numbers 1 to 5. Needing a U-ring larger than the  number 1 supplied in your kit? 

Seven sizes of U Rings are available for CB-X chastity devices. 

Large measurement is 53.975mm