Uni-polar electrified urethral dilators crafted from 316 stainless steel with a completely smooth finish for enhanced comfort during play. Measuring 5.1 inches in length it?s an ideal beginner?s urethral dilator with a 5mm diameter. Once in place you can power up a ElectraStim stimulator not included to experience intense throbbing and heightend sexual arousal. Includes 3 sachets of sterile lubricant and 3 cleaning wipes along with a sturdy storage case.