Steel: Grinded stainless steel 304 Stainless steel 304, powder coated according to RAL colour standard Grinded stainless steel 316 Powder coated steel (with galvanized base coating) according to RAL colour standard - only indoors Wood: Exotic IROKO wood finished with colored/colorless oil Hard, varnished wood (eg. Brazilian oak or exotic TAUARI) - only indoors Kebony wood Concrete: Smooth concrete (light grey color) Other: Polycarbonate