The Simpson Strong-Tie Outdoor Accents Sage System lets homeowners and DIYers easily build strong, beautiful outdoor pergolas with ZMAX-galvanized steel connectors that have a stylish black powder-coat finish. The tested and code-listed Sage post base is designed to secure posts to existing concrete. Its outside flanges offer the flexibility of attaching to the concrete before or after the pergola is finished. These bases easily install on posts with Outdoor Accents color-matched connector screws and secure to the concrete with black Simpson Strong-Tie Titen Turbo concrete and masonry screw anchors (screws and anchors included).