Tie Down Engineering Polymer Coated Hooker Anchor Chain with Two Shackles. Replace those old rusted anchor chains that are staining your boat. Better yet curb the rust with the durability and rust prevention of an anchor chain coated with polymer. 2 shachels included to get you anchored at your favorite fishing hole. Order today! Tie Down Engineering Tie Down Polymer Coated Hooker Anchor Chain with 2 Shackles, 5/16x5"