Nipple clamps are BDSM toys that are designed to stimulate the nipples by applying pressure or restricting blood flow to the area. They typically consist of two metal clamps that are attached to a chain or other connector, with adjustable pressure to customize the experience.
Nipple clamps can be used in BDSM play to enhance the power dynamic between partners, with the dominant partner controlling the pressure and sensations experienced by the submissive partner. They can also be used for sensory play or pain play, depending on the level of pressure applied.