These nipple clamps with chain from Ouch! are easy to use and suitable for both him and her. The clamps and chain are made of stainless steel and aluminum, and are completely nickel free. You can use the nipple clamps for your naughty secrets, or for extra stimulations while making love. Tweezer ends with covered tips for added comfort. Dimensions 1.97 inches by 3.54 inches by 5.71 inches. Weight 2.19 ounces.