These unique nipple clamps are designed to tighten as they twist, giving you full control of the pressure. With vinyl tipped ends for a good grip, you can cinch these nipple grips down and let them hang. A solid ring dangles off the end of each. Want to add even more sensation? Attach the two 8 oz weights and let them pull downward, pulling the flesh tight. Whether you use these clamps for pleasure or pain, you will be sure to find an abundance of sensation in their grip. Measurements: 4.57 inch overall length (including rings), 1.12 inch inner diameter ring pulls, 0.55 inch diameter barrels. Material: Coated brass, rubber, steel. Color: Grey. Note: Kit contains (2) clamps and (2) 8 oz weights