Probe. Perfect for beginners and those new to electro-sex this 3 inch torpedo-shaped probe plugs into the electro-power unit and provides thrilling e-stimulation. The sleek design features a tapered tip and base making it ideal for both vaginal or anal play. Choose a setting on the power units dial to control the intensity and go from a sensuous tingle to a throbbing tap in seconds. Switch between Slow and Fast to control the frequency of the shock or adjust the dial to control the strength of the shock.