Weighing only half as much as standard carabiners, these aluminum-alloy Hunter Safety System Carabiners still have an impressive 5,600-lb. weight rating. Large, knurled locking nut is easy to locate, even in the dark, and installs easily on Hunter Safety System accessories. Per 2. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Treestand Accessories.