Simpson Strong-Tie ZMAX 3.63 in. H x 4 in. W 16 Ga. Galvanized Steel Standoff Post Base (Pack of 20)The Simpson Strong Tie ABA is designed to attach wooden posts to existing concrete. The built in 1 in. standoff of this adjustable post base helps to prevent rot at the end of the post. The ABA has a slotted anchor hole in the base for adjustability and attaches to the post with nails or Strong Drive SD Connector screws. This versatile post base makes a cost effective option for securing a post to the foundation. UPC: 044315430701 Manufacturer Part