Take your CBT play up a notch! This devious device is designed for your slave's pleasure and pain! Push his balls through the largest ring and then his cock through all three rings. Adjust the sharp thumbscrews to clamp down on his supple skin. These three restrictive rings work well as a chastity device because as he gets hard, the screws will dig deeper and more painfully into his sensitive flesh! Your submissive play thing will be vulnerable and entirely at your will while he endures this evil and genius device.