There\'s an added edge to each of the cock rings in this pack of 5: not only do they restrict blood flow out of the penis so that erection appear more pronounced and harder for longer, but each of the metal Electrasex Cock Rings allows a tingling electric current to flow through them. Maximise your sexual sensations by wearing 2 of these uni-polar rings anywhere along the shaft of the penis. Each ring is designed to fit a different part of the shaft and measure 1.4, 1.5, 1.6, 1.7 and 1.8 inches in diameter. Find the best fit for your shape and size for an incredible experience. Comes with a 1 year manufacturer\'s warranty and sensations can be intensified by applying water-based lube before play begins.