Simpson Strong Tie ABU88R 8-Inch by 8-Inch Standoff Post Base for Rough Size Lumber 14-gauge base and 12-gauge strap Use with 18-16d Nails Zinc galvanized finish containing 0.90oz of zinc Nominal Post Size: Rough 8x8 Attaches a post to existing concrete for decks, patio covers and other top-supported structures