This is for two (2) quality marine grade stainless steel (AISI 316) triangle ring welded with cross bar. The size is 6mm x 50mm or 1/4" x 2". 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.