This is for one (1) quality marine grade stainless steel (AISI 316) M12 lifting eye nut. Each bolt is stamped 316 and M12 (for the size). The bolts are manufactured in the metric of M12. 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.