Nipple Clamps Purple Chain with Navel Ring is a matching set of body jewelry. Totally adjustable rubber-coated nipple clamps with a non-tarnishing purple chain and purple bead navel ring. Adjustable nipple clamps are easy to change pinch, just turn the tension screw located at the top of each clamp. Safe and pure for body and pleasure. Made using phthalate free, non-toxic materials Steel chain, ABS plastic beads, PVC tips.