This is a quality marine grade stainless steel (AISI 316) chain ideal for marine applications or where corrosion resistance is required. Great for light applications in water and marine environments. Won't rust. The link size is 5/64" or 2mm equivalent. AISI 316 stainless is a premium grade of stainless and is considered by many to be best in class. 316 stainless is corrosion resistant and very durable even in the harshest of conditions. Breaking Load = 200lbs