Kink Squeeze Clover Clips with Silicone Tips. These beautifully crafted Japanese clover style nipple clamps tighten with every tug and swing of the heavy chain. Recommended for experienced users, the pressure these clamps provide is intense and long lasting. Each clamping implement is tipped in soft red silicone, creating a visually pleasing contrast with the black metal hardware and protecting the skin. Features: Japanese endurance clover style nipple clips. Designed for hands free wear. Red Kink Branded Silicone tips on all clamping implements. Attractive black metal hardware. Phthalate free, body safe. Specifications: UPC number 782421059927. Total length 17 inches. Materials Silcone tip ends, Metal nipple clamps, chain. Non-adjustable nipple clamps. Kink by Doc Johnson is an exciting collaboration with Kink.com to create a collection of high quality authentic fetish items suitable for long term practitioners and new initiates alike.