This is for one (1) quality marine grade stainless steel (AISI 316) rigging toggle. Each toggle is stamped with the grade of 316. The size of 1/4" (6mm) refers to the pin size.. 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 for a long service life.