Beautifully crafted from surgical stainless steel, the Electrastim Prestige Cock Ring Size 2 - 38mm represents the very best in electro sex toy craft. The internal diameter 38mm ring can be worn anywhere along the shaft and connects to your electrostim electrostimulation unit. The ring features a series of holes that trap electro-conductive gel for improved conductivity that's longer lasting than solid metal rings. A single uni-polar input allows you to use any other uni-polar electrode alongside a single cock ring.