This anchor shackle features a round pin design that makes it easy to install and remove, while also providing a secure connection between your anchor and chain. The shackle's screw pin is also easy to open and close, allowing you to quickly change anchors or chain sizes. With a working load limit of 550 pounds and a breaking strength of 1650 pounds, this shackle can handle the weight and pressure of anchor chains and provide peace of mind while out on the water.