This is for one marine grade stainless steel (AISI 316) twist shackle. Each shackle is stamped 316 and laser etched with the manufacturer's mark. The shackles are manufactured in the US specification style. 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. Stainless Steel 316 Twist Shackle Connecting gear from various rigging systems Marine Grade 316 Stainless Steel - rust and corrosion resistant Allows for attachments from the side rather than the front