Amazon.com: 4 Pcs Black Powder-Coated Straight Bracket Plate for 4 x 4 Post,3mm Thickness(11 Gauge)Carbon Steel Flush Mount Post to Beam Connector,Flat Mending Repair Tie Plate for Furniture(Size:10 " L x 3 "
1" O.D. Matte Black Powder Coated Over Stainless Steel– Trade Diversified