Fetish Fantasy Series Heavyweight Nipple Clamps Black. Make your nipples perk with pleasure with these Heavyweight Nipple Clamps. Made with durable metal clips and covered with soft rubber liners, these alligator-style clamps feature adjustable screws that let you customize the amount of pressure on each nipple. The weighted chain intensifies the pressure as the chain swings, giving you incredible stimulation with each movement. One size fits most. Unisex sex toys. Material: Metal.