This is for one (1) quality marine grade stainless steel (AISI 316) 5/16" boat snap hook with 5/8" fixed eye. Each snap hook is laser etched 316. This boat snap hook is ideal for use with rope, chain, and marine or industrial rigging applications. 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.