This is for one (1) quality stainless steel (AISI 304) Square Swivel Pad Eye. Each pad is stamped 304 and the imperial size 5/16". The metric equivalent is generally considered to be 8mm. This pad eye features an eye that rotates 360 degrees. Not to be used for overhead lifting. AISI 304 stainless is a standard grade of stainless. Breaking load 1870lbs.