Enjoy the benefits of a metal cock ring, but with added flexibility and comfort. The ElectraStim ElectraLoops Metallic EM2151are lasso style rings that can be worn around the base, or along the shaft, of the penis. Use the draw-string style adjuster to find a pressure that suits and enjoy longer lasting erections. This pack contains two rings. Each metal ElectraLoop adjusts up to 1.75 inches in diameter. Wear one ring around the base of the penis during sex with a partner and when the uni-polar ElectraLoop is attached to a power pack.