Not just a Ring The E-Stim Systems ElectroRing System creates a modular bipolar fixture with two rings separated from each other with an insulator giving true bipolar sensations. Generally, you have a larger ring behind the testicles and a smaller Ring 'locked' onto the penile shaft with two thumb screws; the ElectroRing System is easy to use and highly effective. More Secure If you want it more secure, then use the Hex-headed bolts and the supplied hex key instead of the Thumb screws - that way, your subject will find it highly difficult to remove without the correct tool. We have the widest range of sizes from 30mm to 65mm (internal diameter), all in a durable satin finish. The Ring system accessory packs the separator block and fittings - all you need to do is choose the ring sizes. Screws M3x6, Delrin spacer block and allen key set bagged.
