Seven sizes of replacement black u-rings for use on all CB-X® chastity devices. A CB-X complete kit includes u-ring sizes #1-5. The #5 u-ring is the smallest in the set and has an inner diameter measurement of 1.5 inches. Available in clear, black, and pink.

Please note that all U-rings in a complete CB-X kit are individually stamped with a number corresponding to the sizes of the replacement U-rings.

Includes:

• One #5 u ring

Measurements(inner diameter):

• #5 - 1½ inches (38.1mm)

Material:

• Lightweight, medical-grade polycarbonate plastic

If you need a U-ring larger than the #1 (2") supplied in your chastity kit, check out the Large and X-large U-rings, which are sold separately - available individually or in a 2-pack (1 x large, 1x X-large).