These unique cock loop electrodes are manufactured from a non-stretch metallic coil and hence give excellent stimulation and comfort. Electrastim Metallic Loops 140mm are a good alternative to metal cock rings because they allow the user to adjust the size. Use one Electraloop near the tip of your cock and the other one around the base. Adjust each loop to the required size using the sliding adjuster and add a lick of conductive gel (see sundries/gel & lube) to each loop at the point of skin contact. Connect each loop to the electrastim cable and you're ready to go!