1Made of professional marine grade cast 316 stainless steel, which makes it sturdy and firm. 2This set have strong corrosion resistance and durable in saltwater circumstance. 3The surface is highly polished and has a mirror?like appearance, which can be matched with modern ships, boats, yachts. 4Package included 2pcs boat deck hinge, 6pcs jaw slide and 4pcs eye end cap, everything you need is included. 5Easy to use and quick to install, will not take up much of your time, very convenient.