The Edelrid Bulletproof Carabiner has a hybrid design which features an aluminium body with a steel insert at the apex of the biner where the rope runs through it. This means that the area which is most susceptible to rope wear and burring is reinforced and has a far better durability and life span whilst the aluminium main body keeps the weight down. * Gate Opening: 20 mm * Closed Gate Strength: 27 kN * Open Gate Strength: 8 kN * Minor Axis Strength: 10 kN * Weight: 55 g Certification: EN 12275