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 stimulation while making love. Length chain 355mm e or approximately 14 inches. Materials Stainless Steel, Aluminum and Thermoplastic Rubber TPR ends. Dimensions 1.97 inches by 3.54 inches by 5.71 inches. Weight 2.19 ounces.