Features & DetailsSturdy Support: Each individual post base measures 3.8x5.5x6.4 inches / 96x140x163mm, with a quantity of 4 pieces. The inner dimensions of the column base are 3.6x3.6 inches. Recommended for use with 3.5x3.5 inch columns, these connectors feature a full wrap structure design, providing secure and effective support without wobbling.Robust and Durable: The base of the connectors is made from carbon steel material with a wall thickness of 0.08 inches / 2mm, ensuring durability and resistance to deformation. They are coated with a spray coating for corrosion resistance and rust prevention, ensuring a long lifespan.Easy Installation: You can quickly install them following the user manual, using a drill for making holes. The product comes with screw holes for convenient and time-saving installationComplete Set Of Accessories: The kit includes a complete set of accessories: Dovetail Screws M525 (36pcs), Thin Wrench M8 Open-End 14 (1pc), Serrated Sleeves M8 (18pcs), Self-Tapping Screws M860 (18pcs). Installation is straightforward and hassle-free.Wide Range of Uses: The versatile screws are suitable for both concrete and wooden floor installations, making them ideal for use in pergolas, porch railings, columns, and other structures where they provide secure support.