This nipple protraction device is designed to clamp down on and then gradually stretch out the nipple. Comprised of a stainless steel frame supporting a dangling clover clamp, it is designed to grip tighter the further the nipple is stretched. Just affix the clamp just behind the nipple, and twist on the wing nut. As the clamp is pulled upwards, the grip is increased, stretching the nipple out. This unique piece can be used by both men and women, and is sure to guarantee the most intense nipple sensation. Measurements: Frame measures 2.10 inches in diameter, 6.5 inches in length; Nipple extractor extends to a top length of 2.5 inches. Material: Stainless steel. Color: Grey. Note: Includes (2) nipple devices