Features: Make of Marine Grade Stainless Steel, very and resistant to corrosion. Safety pin is treated with excellent galvanizing process, the surfaces is smooth, not easy to rusts and corrode. Designs with a self locking rings, and the spring locking Pin is structurally strong, which is very convenient to use and will not loosen during use. Widely used in various Shipbuilding, ship outfitting. kayaks, canoes, boats, dinghy trolleys trailer. These safety hitches Pin is super convenient and is small enough to be accessible wherever and whenever you need them. Specifications: Materials: Stainless Steel Quantity: 1PC/2PCS Rod Length: About 42mm/1.65inch Rod Width: About 6mm/0.24inch Round Diameter: about 41mm/1.61inch Package Includes: 1/2pcs Round Safety Pin note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.