High Quality Material. The 1/4in anchor chains for boats is made of high quality 316 stainless steel material. The surface of each link is polished, making the surface smooth and not easy to rust. Stainless steel chain has high strength, high rigidity and excellent corrosion resistance. Anchor lead chain structure is stable and firm and can be used in high and low temperature conditions and often rainy environments. Boat anchor chain can also be used in fresh and salt water and are very strong.