The HUJ-C ring is an approach to a simple ring that most guys want to use frequently. History shows that this size ring is used in several ways, often more than once. The HUJ ring is a C ring or a testicle ring. Some stack them for more stretch or more grip. Width: 50 mm / Height: 50 mm / Depth: 19 mm / Outer circumference: 152 mm / Inner circumference: 76 mm / Material: Silicone