Wichard Large Anchor Swivel 1/2" - 9/16" [2977W]Large Anchor Swivel 1 2" 9 16" Wichard anchor swivels are designed to simplify anchoring operations, especially when hoisting the anchor. Their unique design ensures that the anchor automatically aligns itself correctly in the bow roller, even if it comes up in the wrong orientation. The Large Anchor Swivel suits 1 2" and 9 16" (12mm and 14mm) anchor chains. Features: Anchor chains from 12mm and 14 mm Self aligning to the bow roller Optimized