Red Hound Auto 5 Pak 3/4" 19mm Galvanized D Ring Shackle 4.5 Ton Boat Marine Anchor Bow Screw - 4X4, Off Road, Truck, Chain, Cord, D Ring This sale includes 5 shackles with screw pins G209 Shackle. 3/4" thick. 4.50 ton Shackle is hot dipped, galvanized, and zinc plated to prevent rust