These round nipple clamps provide a unique sensation. The nipple clamps are strong and have a classic, but tough look. The pressure of the clamps are easy to adjust using the screw at the top. By turning the screw, you can tighten or loosen the clamp, so you can decide for yourself how much pressure you or your sub can handle. The nipple clamps are provided with spikes, which make sure they have a perfect grip. It is also possible to attach the clamps to bondage ropes or bondage chains.