A2 Stainless Steel Metal O Ring Welded Round Wire Dia 3/4/5/6/8/10mm OD 20-100mm. Product material: 304 A2 stainless steel. Product features: strong without losing roundness, safe and reliable material, smooth surface without burrs, firm welding. Product use: can be used with steel wire ropes and metal chains, etc. Please allow minor errors due to manual measurement. Thank you for your comprehension. Monitors are not calibrated, the element color shown in the photos may differ slightly from the real object. Please take the real one as standard.