Hear them coming with these nipple clamps. These tweezer style nipple clamps have a bell attached at each end that makes a low pitched ringing sound. The tweezer clamps have vinly coated ends to provide a soft feel. The sliding ring allows for varying amounts of pressure to be applied. These are great clamps for beginner or advanced nipple play. They are also great for humilation play, and can also help locate subs quickly. Can be used on the scrotum, penis, nipples, and labia.