This is for one (1) quality marine grade stainless steel (AISI 316) D shackle. Each shackle is stamped 316 and laser etched with the size. The shackles are marked in the US specification style. This is a 5/8″ cast shackle. 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.