This is for one (1) quality marine grade stainless steel (AISI 316) D Rings Welded 8mm x 70mm ID (5/16" x 2 3/4"). Each D Ring is stamped 316. 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.