High tensile aluminum carabiner with screw gate. Heavy Duty Alu is the aluminum connector with the highest strength in the range of aluminium carabiners of our production, 36 kN on major axis!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.