Extremeline Teeth Clamps Adjustable nipple clamps with toothy tips. The teeth in these bare metal clamps have a sharp bite! A link chain adds some weight. These aren't for the faint of heart or faint of nipple. These Tapered nipple clamps deliver a tantalizing pinch that you will definitely notice. In the adjustable style, the tapered surface will hold the contours of your nipple as lightly or as tightly as you choose.