Stainless Steel Anchor Chocks for 5-20lb AnchorAnchor Chocks help protect the surface of your deck in rough seas or while the boat is underway. Secures the anchor when not in use while still maintaining easy access. For use with conventional fluke anchors from 5-20 lbs. Constructed of corrosion resistant investment cast 316 stainless steel. Deck mounts with ten #10 FH fasteners (not included).