Length: 76 mm, Diameter 37 mm, The CB-3000 Male Chastity Device is a newly updated classic offering the best of comfort and security. The rings consist of three interlocking pieces that fit together like a puzzle. The two guide pins hold the top pieces together. The oval locking pin goes through the middle recessed hole connecting the cage portion to the ring. The CB-3000 is made of medical grade polycarbonate material. It is lightweight, hypoallergenic and durable. The cage portion is vented for hygiene and has a bottom opening allowing use at urinals. The different size rings and spacers included in each package allow you to customize your fit to your individual needs. The CB-3000 restricts you from touching your genitals for sexual pleasure and gives the Keyholder control over the sexual fulfillment of both partners.