This is a 3/8" inch galvanized boat anchor line shackle. It's the part you need in order to connect anchors to chains and anchor ropes. It has a removable screw pin for easy attachment. It's a medium duty connector and the working load is 1234lbs and the breaking strength is 3705lbs. Opening clearance with pin removed is 1/2" inch. Inside diameter is 1" inch on the small side and 1 1/2" inches on the long side. Overall length is 2 1/2" inches. It's a good deal and your satisfaction is 100% guaranteed. We are so sure you will be pleased with your purchase or we will pay for return shipping (U.S. only) so you have nothing to lose. Make sure you get the right size shackle for your application! Shipping is FREE everywhere in the United States. For international shipping not listed contact us for a shipping quote before placing your order. Thanks again for looking and as always your business is appreciated! Please note: Check out our "Boat Dock/Anchor Line" category to find more super low prices right now on dock lines, hardware, and other boating accessories. We got a great deal on a variety of items for boaters from a top name manufacturer and are passing the huge savings along. Save big $$$ compared to your local marina. Quantities are limited and they are sold out when gone.