The Silver Mandible Clamps are based on surgical clamps from 1909. Perfect for walking the fine line between pain and pleasure, these clamps adjust with screws making them more adjustable from gentle to tight than traditional Japanese clover clamps as well as other spring clamps. The PVC pronged tips are safe to be used by latex allergy sufferers and can be removed for more extreme sensations. Use them on nipples, the tongue or other body parts. Start gently and gradually increase the pressure. The chain will further add to your pleasure/pain experience.