Make of Marine Grade Stainless Steel, very and resistant to Widely used in various Shipbuilding, ship outfitting kayak, canoe, boat, dinghy trolley trailer The pin is treated with excellent galvanizing process, the surfaces is smooth, not easy to rust and corrode These hitches pins are super and are small enough to be accessible wherever and whenever you need it Designed with a locking rings, and the spring locking pins are structurally strong, which are very to use and will not loosen during use, Manufacturer: INSEOWI