Test your limits, or your partnerÕs, with this BDSM basic. Rubber-tipped for comfort, these clamps are a great introductory accessory for those who lean towards masochist or submissive roles, though anyone can enjoy the teasing torment of nipple toys. Thumb-screws allow you to adjust the pressure on each nipple, while a connector chain gives you something to tug on as climax nears.