15150mm Stainless Steel Round Rings Heavy Duty Solid Metal O Ring Welded Smooth. Material: 304 stainless steel. Wide range of applications. 304 stainless steel bolts are widely used in industry, furniture decoration and other industries use a wide range, making it unanimously welcomed by all industries. Assured selection of excellent quality. The product selection of 304 stainless steel, with good corrosion resistance, oxidation heat resistance, high strength, high toughness characteristics. According to your choice. Thank you for browsing our products.