Stainless Steel Male Chastity Device Punk Style Cock Cage Hinged Penis Ring Screws Lock A Device is made of stainless steel and its surface is polished. Including 1 cage, 1 ring, 1 urethral catheter, some spare screws and wrenches. Ring has 3 sizes (inner diameter) can be selected: 40mm, 45mm, 50mm. cage consists of 3 small rings, the inner diameter are 28mm, 32mm, 30mm respectively. Cage length is about 64mm. Urethral catheter length is about 60mm, diameter is about 6mm. These sizes may have a little error because it‘s made by hand.