Stable Support: Each post base measures 3.78 x 3.78 inches, with a total of 4 pieces. The inner tube size is 3.6 x 3.6 inches and the bottom cross-section size is 5.5 x 5.5 inches. 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: Made of carbon steel with a wall thickness of 0.08 inches, ensuring long-lasting durability. The surface is coated with electrostatic paint for corrosion and rust resistance, providing extended lifespan.

Complete Accessories: The post anchor includes M8*60 self-tapping tube screws, φ12*60 expansion screws, M8 washers, M5*25 wood screws, and an 8-13 double-ended wrench, making installation simple and easy.

Wide Application: The dual-purpose screws are suitable for concrete and wood floor installations. This post base can be widely used in pergolas, veranda railings, column supports, and more, providing secure support.

• Kit Quantity: 4 pieces
• External Dimensions: 3.78 x 3.78 inches / 96 x 96 millimeters
• Internal Dimensions: 3.6 x 3.6 inches / 92 x 92 millimeters
• Base Cross-Section: 5.5 x 5.5 inches / 140 x 140 millimeters
• Wall Thickness: 2 millimeters
• Product Dimensions: 5.51 x 5.51 x 5.51 inches / 140 x 140 x 140 millimeters