Pleasure, pain and aesthetic appeal all in one: these nipple clamps are the perfect way to adorn yourself and give an extra kinky twist to a classic toy. The metal chain has spikes that hang from double chains. As they are suspended across your chest, the clamps grip tightly to your sensitive nipples. With rubber tips to protect the delicate skin of the nipple and areola, the clamps are also easy to use and use a screw to adjust the pressure. Not only do the spiked chains look beautiful, they can also be used to gently tug at the nipple clamps and play with sensations further! After use, simply spray them with a toy cleaner and then let them dry. All metal is nickel-free. Take one clamp in one hand and grab the nipple in the other hand. Place the clamp right below the nipple along the areola. As you clamp down, adjust using the screw and move slowly. Apply pressure very slowly and release slowly. Every little movement will cause some amount of sensation or pain, so be intentional. Keep it on for no longer than 30 minutes the first few times. As you remove them, keep in mind that removal can be twice as intense as application! Enjoy! Measurements : Overall length: 15 inches. Clamps open up to 0.5 inches wide. Materials : Iron, ABS plastic, PVC Color : Black, silver.