Straight round aluminum. Chromated pre-treatment with superior powdercoat finish in black RAL 9004, grey metallic RAL 9007, white RAL 9016 or dark bronze RAL 8019. Specify finish. Consult WE-EF color chart for other options. Specify suitable pole top tenon for intended brackets. Service door with tamper-proof hadware. Base plate welded tubular shaft. Spun aluminum base plate cover.