Beautifully crafted from heavyweight 316 surgical stainless steel, our Prestige Metal Electro Cock Rings represent the very best in electro sex toy craft.Available in five different sizes for the perfect fit, they can be worn anywhere along the shaft to bring that unmistakable thrill of electro sex to masturbation, foreplay and penetrative sex. Each ring features a series of holes that trap electro-conductive gel for improved conductivity thats longer lasting than with our solid metal rings. A single uni-polar input allows you to use any other uni-polar electrode alongside a single cock ring, or why not try wearing a ring at the base of your shaft and another below the frenulum for full-length sensations?One ring is included in each pack. You will need to connect Prestige to an ElectraStim stimulator alongside a second uni-polar electrode, sold separately to feel the sensations described.   Internal Diameter 42mm or 1.7 inches Circumference 132mm or 5.2 inches