Darby Suction Cleat Initially created for the Super-Yachts. Mold- injected with UV inhibitor nylon. Two suction cups and includes a six and one half inch (6-1/2") cleat. Non-marking white thermoplastic elastomer cups prevent unsightly black rings. The lock down latch is nylon and attached to the cups with stainless steel retainer pins and nickel-plated cup shafts. Works above and below water line. Attaches firmly to any smooth, clean surface. Suction cups are strong enough to hold 100 lbs. when properly attached.