Black Diamond Nitron Screwgate Carabiner - The Nitron Screwgate Carabiner by Black Diamond is the ideal choice for everything from belaying to anchor building. With a light, ergonomic design and screwgate sleeve, the Nitron provides secure, easy clipping and cleaning. The smooth-clipping keylock nose won't snag on bolts and slings, while its hot-forged construction allows for a streamlined shape that reduces weight. When you are ready to grab your helmet and harness, don't forget to grab the Black Diamond Nitron Screwgate Carabiner.