YiFeng Stainless Steel Male Chastity Tube Cage Device Belt 171
This item is made of stainless steel.
The cage and ring are locked together with the lock. Once the lock is locked there really is no escape (unless you have the key).
Tube Length: 55mm(Long Side), 35mm(Short Side).
Tube Diameter: 30mm.
Pole Diameters: 3mm / 5mm (for your choice).