Made of High-quality Stainless Steel, very strong and sturdy with water and rust resistant and long-term durability. Finely polished for superior corrosion resistance and is durable for the harsh marine environment, constructing a Permanent Mooring. Easy to install and functional design, suitable for marines, boats, ships, yachts, kayaks and so on. Dimensions: Base: 6.32 x 4.47 inches, Pipe Hole: 4.3 x 2.31 inches, Stainless Steel Material. Package Includes Pack of 1 MARINE CITY Stainless Steel Hinged Chain Deck Pipe (Fasteners not Included).