Let him squirm all night with the Rings of Power. This three pack of Black Nitrile Cock Rings is made to enhance the experience for the man as well as encourage a reliable erection. Features three different sizes 1.5-inch 1.75-inch and 2-inch. Sex and Mischief Nitrile Cock Ring 3 Pack. After using your product make sure to always clean and sanitize your item with a quality disinfectant.