Hear them coming with these nipple clamps! These tweezer style nipple clamps have a bell attached to the end that produces a low sound. The clamps are coated with vinyl for a soft feel. The sliding ring can be adjusted to control the pressure. These great clamps are for beginners and advanced users alike. They are also perfect for humiliation, and can be used to quickly find your sub. Can be used on the balls, penis, nipples and labia