This is for four (4) quality marine grade stainless steel (AISI 316) M6 6mm x 40mm eye bolts welded. Each bolt is laser etched with the grade of 316 and the makers mark. Each eye bolt comes with two washers and one M6 nut. 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. Breaking Load 2200lbs. Working Load Limit 550lbs.