• Metal O-rings made from durable, high-quality material • Electroplated surface, smooth and burr-free, with natural shine • Do not deform easily and are suitable for prolonged use • Usable for hanging and securing leather, fabric, cotton, nylon, and webbing items • Perfect for backpacks, shoulder bags, garments, hats, pet collars, handbags, pendants, and keychains • Allow for the creation of crafts and personalized projects • The package includes 90 metal O-rings: 30 of 20 mm, 30 of 25 mm, and 30 of 32 mm inner diameter • Coating process protects against rust and corrosion • Suitable for different environments and sewing and craft needs