4"x4" Post Base Bracket (Internal 3.5"x3.5")?4 Pcs Stainless Steel Adjustable Post Base?Concrete Post Anchor for Deck?Pavilion, Railing, Porch Support 4x4 - 4pcs Stainless is up for auction in Tools & Home Improvement. The current bid is $3.50, 93% below the $50.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.