The Greatbear Screw Pin Anchor Shackles is used for connecting different types of lifting slings, chains, or ropes to an object or to each other, and the anchor shackles can be used for multiple applications: towing or pulling, lifting, hoisting, rigging, and tie-down. The anchor shackles, also known as bow shackles, are used to be side-loaded or multiple sling-leg connections. One advantage of the Greatbear screw pin anchor shackles is that it can be used for side pulling when you factor in the decline to the working load limit based on the angle deviation from in-line.