Double Sperm Stopper Cock Plug This Sperm Stopper gives the cock a hard firm head, just like during an orgasm. Cock bondage can be greatly enhanced with our Sperm Stopper Head Ring. This patented beauty has a small hinged hook Attached to the glans ring. It is worn tightly around the head of the penis, and the sphere is inserted into the urethra. Ball diameter = 8 mm Diameter of the Ring is available - 25 mm, 28 mm, 30 mm, 32 mm.
