Rooster Control Rings Black from Curve Novelties. 3 Pack = More Ways to Grip Your Gear. Set of 3, 100% silicone cock rings in graduated sizes. Use the smallest, tightest fitting ring to constrict blood flow. Switch to the medium size ring for a less intense fit. Wrap the largest ring around the scrotum to delay ejaculation. Use individually or all at once for ultimate control. Features: 3 piece set, phthalate free, latex free, 100% Silicone. Materials: Silicone. Dimensions: small cock ring: 1.25 inches, medium cock ring 1.625 inches large cock ring 2 inches diameter. Weight small ring .12 oz, medium ring: .15 oz, large: .2 oz. Care clean with soap and warm water or toy cleaner before and after use. Use only with water based lubricants.