Black Diamond have come up with an ingenious way to eliminate the risk of cross loading, & potential failure, of belay carabiners. The uniquely shaped gate, when closed, captures the belay loop & keeps the carabiner in the optimum loading position. Hot forged with an I beam spine that curves around to create a large rope bearing surface for maximum strength & rope feeding. This brilliant carabiner is so easy & intuitive to use & makes belaying ultra safe. Hot-forged construction Patent-pending design eliminates cross loading while belaying I-beam spine transitions into a rounded, large rope-bearing surface Intuitive & easy-to-use design Screwgate sleeve