Approximately 16x5x8 target silver plated brass changeable necklace bails with post for hanging pendants. 9mm long, 1mm diameter posts. JBB Findings is internationally known as a manufacturer of quality jewelry findings & supplies. Bail fits up to 6mm cord. Great for Swarovski and other pendants with front-to-back hole alignment. Holes should be 1.2-3mm and no more than 5mm from the top of pendant. Use French-wire keepers to secure drops on bail post.