5 Pack Simpson Strong Tie ABU66 6x6 Standoff Post Base 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 Zinc galvanized finish containing 0.90oz of zinc per square foot of surface area (total both sides)