This is for three (3) quality marine grade stainless steel (AISI 316) spring snaps with eye end 2 and 3/4 inch length. Each spring snap is stamped 316. The spring snaps are in the US specification style of 2 3/4". The metric equivalent is generally considered to be 70mm. 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.