Rimba Electro Play bipolar ball stretcher or cock ring including power wire with banana plug. This aluminum ring consists of 2 parts (+ & -) half rings, which are insulated from each other and held together by 2 rubber rings. The inner diameter is 34 mm. The 4 mm banana plug can be used on both sides. If both metal parts touch the human skin, an electric shock can be exerted. Always be careful, do not use if the skin is broken or irritated, if you have heart problems or are pregnant. Tip: Use the rimba contact gel ref # 3000 to achieve the best results. This Rimba Elecro Sex Ring has a 2.5 mm jack plug that can be connected directly to all Rimba Power Box devices.