Inflatable Boat & Marine USA Boat Anchor-Folding Grapnel Grappling Type 1.5 Lb/0.7 Kg - 316 Marine Stainless Steel Precision cast 316 Marine Grade Stainless Steel Maximum corrosion resistance and durability in the saltwater environment. Polished to a beautiful, mirror-like finish. Flukes are secured with a locking ring in the open and closed position. See additional details in product description below.