Materials Cover plate in die-cast UNI EN 1706 AC - 46100 DF aluminium alloy. Bracket fastening screws made of AISI 304 stainless steel. Surfaces subjected to metal grit blasting treatment or coated in grey RAL 7000 color stove-enamelled epoxy paint (SMS series). Characteristics Bracket fastening screws with special hemispherical triangular shaped heads and semi-rounded sides (patented), tightened with the special supplied key. Fixed to pole with easily operated non-tarnishing mechanism.