Boat owners and marine enthusiasts, these MEMUME shackles are built tough for serious water use! Made from 316 marine-grade stainless steel, they resist corrosion from saltwater and harsh conditions beautifully. You get four different sizes in the pack - 1/4 inch, 5/16 inch, 3/8 inch, and 1/2 inch - giving you versatility for various applications. The weight capacities are impressive, ranging from 1,100 pounds for the smallest up to 4,400 pounds for the 1/2 inch size. Each shackle comes with a cotter pin for secure fastening that won't accidentally come loose. Perfect for boat anchors, rigging, towing, or any heavy-duty marine or industrial use where reliability matters. The D-ring design makes connecting chains, ropes, and hardware straightforward and secure. Whether you're setting up anchor systems, securing cargo, or need reliable connectors for outdoor projects, these shackles deliver professional-grade performance without the professional price tag. They're one of those boating essentials that give you peace of mind knowing your connections are secure and corrosion-resistant.