This is for one (1) quality marine grade stainless steel (AISI 316) hook anchor. The hook anchor is 15" in length (375mm). Each hook anchor is stamped 316 and laser etched with the makers mark. Not to be used for overhead lifting. 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.