The ProX XT-USHACKLE screw pin anchor U shackle is made of galvanized steel. The anchor shackle is a tough and durable accessory for Trussing and Stage Roofing Systems and nylon slings as well as polyester slings. Paired with a lifting sling they help protect the eyes of your sling from wear and tear on clevis hooks.  Also excellent for use in hanging video walls.