This is a circular ergonomic base ring for the Cherry Keeper Chastity Cage angled toward the cage to decrease the ball gap. Choose a circular ring of a given size to have a balance between ring size and gap between cage and base ring. The profile of the ergonomic ring is such that it provides a little more downward angle and narrows the gap between the sides of the cage and ring.Note: The ball gap on this ring will be different than what is listed on the cage product page.If your size is not listed here, message me, and I'll make it available for you!To have a complete product you must have two parts, a ring and a cage.Product DetailsRing Profile: Circular - 8mm dia.Ring Shape: circular ergonomicInside Diameter: 60mm (188.5mm circ.)Angle: -12 degree(s)Ball Gap: (+/- 0.2mm)(Due to the severe angle, the gap to the Standard Cage is listed separate) 27mm I.D. Cage (Micro): 26.4mm 30mm I.D. Cage: 23.8mm 32mm I.D. Cage (Stub): 22.1mm 32mm I.D. Cage (Standard): 20mm 35mm I.D. Cage (Short, Small): 19.2mm 38mm I.D. Cage: 17.2mm 40mm I.D. Cage: 15.7mm Locking Mechanism: Utilizes a standard chastity lock cylinder (not included)This ring is only compatible with Cherry Keeper Cages. It is NOT compatible with New Fun cages or cages from other devices.[size=9px]Description version v20190915 updated on 9/18/2019 10:12:40 PM[/size]