Simpson Strong Tie ABW66RZ  ZMAX Galvanized 12-Gauge 6-Inch by 6-Inch Rough Adjustable Post Base Attaches a post to existing concrete for decks, patio covers and other top-supported structures Features 1 in. standoff to help prevent rot at post end Slotted for adjustability Designed for versatility, cost-effectiveness and maximum uplift performance Nominal Post Size: Rough 6x6