One-Piece QT450-10 Ductile Iron Construction: Cast from high-strength QT450-10 ductile iron in a single piece, this heavy-duty flange bracket combines classic aesthetics with industrial-grade durability. Perfect for securing chain link fence posts, mailboxes, lamp posts, and steel round tubing to concrete foundations. CNC Precision Turning: CNC precision machine tools are used to polish the caliber and bottom of the post anchor flange bracket, The caliber of the bracket is more smooth and precise; The bottom of the bracket is flat and fits better with the concrete ground, Which is not easy to shake and makes the chain link fence post more stable; The surface is galvanized baking paint, Which is waterproof and rustproof, And ensures durability Size Specifications: Fits 2.5 (Actual: 2 3/8 OD) metal post, L/6.5 x W/6.5 x H/4.35 , Qty: 2pack 3-Step Installation (Hardware Included): ①Drill 4 pre-set holes in the concrete floor with an electric hammer (Drill bit: Φ5/8 - not included), ②insert the expansion bolts and lock them in turn with a wrench, ③Drill the hexagonal screws on the side of the bracket and lock them to complete the installation Complete Hardware Bundle: Includes 2pc Floor flange, 8pc Expansion bolts (Φ9/16 x4.72 ), 4pc Hexagonal fixing screws (Φ3/8 x3/4 )—all crafted with high-quality materials for easy, secure installation. Ideal for contractors, DIY enthusiasts, and commercial projects.We endeavor to provide our customers with high quality products, If you have any questions about our products, please feel free to contact us ASIN B0DKFJR79W Color galvanized Material 235-Steel Item Form Solid Brand Name Epcee Item Shape Rectangular Part Number Ep005-2.5in-2p Grade Rating Industrial Manufacturer Epcee Item Diameter 2.88 Inches Item Thickness 4.35 Inches Number of Items 2