*KeyFeatures *Stable Support: Each post base measures 5.75 x 5.75 inch, with a total of 4 pieces. The inner tube size is 5.6 x 5.6 inch, and the bottom cross-section size is 7.44 x 7.05 inch. It is recommended for use with 5.5 x 5.5 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, 12*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 ******************************************************************************************************* *Specifications Item Model Number: QB-6in-4 Kit Quantity: 4 pcs External Dimensions: 5.75 x 5.75 inch / 146 x 146 mm Internal Dimensions: 5.6 x 5.6 inch / 142 x 142 mm Base Cross-section: 7.44 x 7.05 inch / 189 x 179 mm Wall Thickness: 2mm Net Weight: 16.98 lbs / 7.7 kg Product Dimensions: 7.44 x 7.05 x 5.51 inch / 189 x 179 x 140 mm ******************************************************************************************************* *Pakcage Content Post Bases x 4 M8*60 Self-Tapping Screws x 24 12*60 Expansion Bolts x 24 M8 Washers x 24 M5*25 Wood Screws x 32 Base Brackets x 4 8-13 Double-Open End Wrench x 1