Material and Durability: Crafted from quality, rust-resistant steel, the Square Post Flange Base offers long-lasting performance. Design and Compatibility: Floor Post Flange universal design fits most standard square posts, making it a versatile choice for various fencing or decking projects. Easy Installation: With pre-drilled holes and a straightforward design, the installation of this Square Floor Flange is simple, requiring minimal tools and effort. Stability and Support: This post base provides reliable support, ensuring the stability of your posts, making it a practical addition to your construction or renovation projects. Maintenance and Care: The Square Post Flange Base is designed for easy upkeep. The square post holder can be widely used for deck supports, porch railing support, handrails, fence post base, benches, handrail support, and mailbox posts, etc. Size Chart: 2.6cm x 2.6cm / 1.02 inch x 1.02 inch Height: 2.5cm / 0.98 inch 3cm x 3cm / 1.18 inch x 1.18 inch Height: 3.5cm / 1.38 inch Package Includes: 5 pcs Square Post Flange Note: Please allow slight errors of 1-2cm due to manual measurement.