SPACEEUP Post Base 4"x4" （Internal 3.5 x 3.5"）Post Anchor 2pcs Adjustable Post Base Stainless Steel Concrete Post Anchor for Pavilion Deck Railing Support Decorative Anchor Plate

Metal brackets are made well. Used these on some 4x6 posts. My reason for a four is because the hardware is cheap. Did not use the hardware that came with the post anchor brackets. Bought new at local hardware store.