The Nite Ize B-Series Dual Carabiner features a unique load-bearing design comprised of dual inner spring gates. Built with strong stainless steel, the unique “B” shaped carabiner allows you to securely clip any item up to 200 pounds for size #4. The precision engineering of the strong stainless steel inner gates prevents keys, gear, and tools from self-releasing, ensuring they stay securely clipped. And yet, when it’s time to remove a key or item, a simple push of the gates is all it takes to free it.