Simpson Strong-Tie ABU66Z Post Base 12-Ga Zmax 10Pk

5-1/2"w x 5"l x 6-1/16"h 5/8" Anchor Diameter Use with 12, 16d Nails and 2, 1/2" Bolts 12-ga Base and 10-ga Strap Z-Max:Hot Dip GalvanizedG185 1.85oz of zinc per sq-ft surface area per ASTM A653 total both sides