What you're getting are 3 sensory rings, that can easily be applied to your favorite CB-X chastity device (i.e. CB6000). They are to be placed over the spacer and will apply additional stimulation during wear. You can apply the shorter tips (for gentle sensations) and go gradual to the longer tips (for intense sensations).
Specs: CB-X Points of Intrigue Accessory
Size: Small spike length: 0.125 inches; Medium spike length: 0.19 inches; Large spike length: 0.31 inches
Compatibility: Works with CB-X devices (i.e. CB6000 / CB3000)