A Screw Pin Anchor Shackle Grade 80 (Omega or bow shackle) is a type of shackle, a crucial component in lifting and rigging applications.They are commonly used in various industries, such as construction, manufacturing, and marine applications. They provide a secure connection point for attaching slings, chains, or other rigging components. The screw pin design allows for easy and quick connection or disconnection, making them convenient for many lifting and rigging operations.