Features & Details Stable Support: Each post base measures 3.78 x 3.78 inch, with a total of 4 pieces. The inner tube size is 3.6 x 3.6 inch, and the bottom cross-section size is 5.5 x 5.5 inch. It is recommended for use with 3.5 x 3.5 inch posts. The fully enclosed design provides secure, effective support and ensures no wobbling during use Durable and Sturdy: This post bracket is made of carbon steel with a wall thickness of 0.08 inch, ensuring long-lasting durability. The surface is powder-coated for corrosion and rust resistance, providing a long service life Installation is a Breeze: You can quickly install it by following the user manual. Simply drill holes with a power drill, use the screw holes, and secure with screws. The process is time-saving and effortless Complete Accessories: Our post anchor includes M8*60 Self-Tapping Screws, φ12*60 Expansion Screws, M8 Washers, M5*25 Wood Screws, 8-13 Double-Ended Wrench, making installation straightforward and easy Wide Application: The dual-purpose screws are suitable for both concrete and wooden floor installations. This post base can be widely used in pergolas, porch railings, column supports, and more, providing secure support

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