Sea-Dog Galvanized Screw Pin Anchor ShackleWith their round shape, these shackles are designed to handle many different types of load from any direction. Ideal for joining anchors to mooring chain.Features: Screw pin closure; Constructed of hot dip galvanized drop forged steel; Ideal for joining anchors to mooring chain; Dimensions: 147806-1; A: 1/4"; B: 5/16"; 147808-1 A: 5/16"; B: 3/8"; ; 147810-1 A: 3/8"; B: 7/16"; ; 147812-1 A: 1/2"; B: 5/8"; ;