br The Edelrid Bulletproof carabiner is a hybrid carabiner that combines the benefits of steel and aluminium. The Bulletproof is made from mostly of aluminium, with the exception of a steel reinforcement element. This provides protection at the point that is most susceptible to abrasion, and solves one of the greatest problems experienced by sports climbers: edge wear. Available in both bent and straight gate versions, the Edelrid Bulletproof is the ultimate hardwearing sport climbing quickdraw.