At 31kN (almost 7000lbs) the Force D is one of the strongest aluminum carabiners in the world. The Force D is an affordable, rock solid design, that has proven itself in the field around the globe. Whether it’s used in recreational climbing, military applications, or rescue scenarios, this carabiner is designed to get the job done. Available in locking and non-locking versions, and in tactical non-reflective colors, the Force D offers lasting versatility and value. The Force D Screw-lock provides tried-and-true locking, without the complications and aggravations of other methods. And SMC’s commitment to quality means that every lock and unlock will be smooth and precise time and time again.