5Pcs Solid Brass Opening D Ring for Straps Bags Purses Belting Leathercarft (insides 1.52'') (16mm) Manufactured from solid brass Designed as a connector for rope, chain and strap Always use a size at least as large as the wire size of the chain These are molded and casted, no seams in the middle. strong and clean. It will oxidize slowly.and looks like antique Brass,you can enjoy the process of DIY.