Master Series Threshold Extreme Sensation Clamps from XR Brands. These exciting steel clamps will grasp your skin with 4 slim fingers, creating a serious pinch and an intense sting that will have you curling your toes in ecstasy. Pressing the end of the clamp extends the thin claws. Just place them over the skin you desire to stimulate, and release. The claws are drawn back into the clamp, grasping the flesh and holding the clamp in place. A unique sensation for true pain and sensation play aficionados. Measurements 2.85 inches in length, 0.3 inch maximum opening diameter. Material Stainless Steel. Color Silver. Note contains 2 clamps.