This is a fantastic monopole cock ring electrode for e-stim. Just like regular cock loops where you need two to form a circuit, this cock loop differs in that one half is insulated.
When placed around the cock and balls with a regular cock loop just under the glans, it forces the current through the Dorsal and Perineal nerves.
It delivers delicious sensations, and my Stunt Cock achieves hands-free orgasms with it easily. The STL file is available in two sizes for free on my site so if you have access to a 3D printer then you can make one yourself and just add the 6mm or 4mm conductive rubber.
As with all of my electrodes, I can make you one up, and they are available on my site.
Just like any other e-stim electrode, you use it at your own risk. Turn up the power slowly until you are comfortable with the sensations that it generates.
Youtube has taken exception to links on this video and so they have had to be removed sorry.