3 Way Swivel Anchor Stainless Steel 8-12mm (5/16"-1/2") Chain size 3 Way Swivel Anchor Stainless Steel 8-12mm (5/16"-1/2") Chain size, 150mm (6 3/8") length 37mm (1.5") Diameter, 10mm (3/8") Pin Diameter, Keeps anchors from swiveling during deployment and retrieval High strength stainless