Outdoor Accents? adjustable post-bases secure the post or column to concrete and are ideal for outdoor projects such as pergolas, patio covers and other top-supported structures. These post-bases are part of our Outdoor Accents? Mission Collection? and feature decorative edges with a southwestern flair that bring design elegance to your outdoor living areas. ZMAX? galvanized steel with a black powder-coat finish provides corrosion resistance. The APB post-bases install with the Outdoor Accents? structural wood screw and patented hex head washer (sold separately) the only approved fastener solution for Outdoor Accents? connectors. This screw and washer combination provides a decorative bolt-like connection, with the installation ease of a screw. APB models include a 1 in stand-off from the concrete to help avoid post-end rot caused by moisture.