Adjustable Nipple Clamps Perfect form meets sexy function in these fully adjustable nipple clamps. The clamps are vinyl-coated to prevent abrasion, and each clamp is outfitted with an adjustable screw to temper the amount of pressure exerted on your (or your partner's) tender buds. The black metal clamps are connected with a 13-inch black metal chain--on most physiques, this length will provide a comfortable span with a small amount of slack. These nipple clamps look very fetching when suspended across a heaving chest, and they feel even better! Feel the pinch of passion.