This is for one (1) quality marine grade stainless steel (AISI 316) 1/2" Trigger Snap with Swivel End. Each trigger snap is laser etched 316 as well as the imperial size 1/2". The size indicates the inside dimension of the loop. This trigger snap features a full-swivel eye which prevents tangles. 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.