It’s the electro sex pleasure probe that inflates to your desired diameter. The Air Stim Vaginal Probe features two gold plated electrodes which are safe to use with those who have a nickel allergy. At the centre you’ll find an inflatable bulb which expands to your desired diameter when you use a Luer connection syringe (not included) to inflate. It feels amazing to squeeze the bulb with your muscles as you enjoy the thrilling sensations of electro sex. This bi-polar electrode is safe to use anally or vaginally and can be used with any electro sex power box with 2mm connections.