Geomet coating is consisting of zinc and aliminium particles which has an inorganic water-based coating. Geomet coating provides  in the structure of aluminium, zinc, and maximum corrosion protect by passivation of silicium oxide. Geomet is bolt and nut which is a coating type provides effective corrosion protection in the form of a thin film coating. It has silver gray color, non electrolytically and is not include chromium. That is not contain chromium and heavy metals, because of this it is sensible for human health. Geomet 500 salt test tolerance is for 5-7µ coating 600h, for 8-10µ coating 1000h.