[MATERIAL]: 304 stainless steel, anti-corrosion.

[SIZE]: M2, M2.5, M3, M4, M5, M6, M8, M10, M12, Total: 700PCS.

[STRONG AND DURABLE]: Prevent rust and oxidation, use for a long time.

[ELEGANT APPEARANCE]: Stable structure, no burr in polishing.

[WIDE APPLICATION]: Increase contact area, reduce pressure, prevent loosening, and protect parts and screws. The gasket is a mechanical seal between two objects, which is usually used to prevent pressure, corrosion, and pipeline natural thermal expansion and contraction leakage.