High tensile carbon steel carabiner with screw gate.Heavy Duty Carbon is one of the strongest connectors in the world; to give you an idea, with 60 kN load on the major axis could be used to lift 6 cars! The particular D shape prevents the rotation of the hook and allows distribution of most of the load along the stronger axis.Equipped with screw gate which makes it perfect for all professional applications.High quality product completely developed and produced in Italy.Tested piece by piece.