Okones 20mm DIA Leather handmade Factory Flat Split Solid Brass Antique Key Ring Pack of 20 (4/5'' 20mm) Ring DIA:20mm,for webbing, strapping, flat cords,belting 62%brass,these are molded ,strong and clean. It will oxidize slowly.and looks like antique Brass,you can enjoy the process of DIY. Package: 1 pack of 20 pieces per sizes