The Kali's Teeth Bracelet is said to have been worn by devotees of ancient Goddess-centered religions so I like the idea of it also being involved in modern femdom relationships.There are companies that make plastic versions of this device, but I appreciate the careful attention to detail in this dulled metal version that makes actually drawing blood more difficult. Sizing really matters on this one, millimeters mater!Most people consider this to be a "punishment" device because it does not allow for ANY erections without painful consequences. Kali's Teeth lock around the shaft of your flaccid penis behind the head at a tightness that will not allow it to slip past the coronal ridge and therefore be removed. It has inward facing spikes that are very persistent when poking at tender genital flesh.These devices are also GREAT for tease and denial scenes because it leaves the head of his cock available for stimulation. The moment that a man begins to get hard, the device gives him an immediate, painful reminder to remain chaste. Instant CBT, just add arousal!The point is not to damage his dick, but to cause erections to be painful and render orgasm impossible. Some men consider that a challenge!I kept this slave in one of these bracelets for one full year and found that, over time, the skin beneath it thickened into a rougher, less sensitive ring around his penile shaft. He has learned a permanent lesson that resulted in mild body modification. I think that is very sexy, but also a point to consider when using this device for more then a day or two at a time.