【Size Specifications】: The steel post bases have an inner size of 121x121 mm, a base size of 18x18 cm, a height of 15 cm, and a thickness of 2 mm, with holes of 11 mm diameter 【Versatile Use】: Suitable for a wide range of applications, perfect for supporting gazebo posts, porch rails, fence posts, or even used as brackets for table legs or mailbox posts 【Enhanced Stability】: Firmly mountable to concrete or wood surfaces, these post mounts secure gazebo posts, porch rails, and more, providing dependable stability 【Durable Construction】: These anthracite square post bases are crafted from powder-coated steel, known for robust resistance and weather endurance, ensuring long-lasting performance 【Package Inclusion】: This set contains 12 steel post base brackets, weighing 19.78 kg, with mounting accessories not included; anthracite finish adds a sleek touch, Weight: 43.6074354236 Pounds, Manufacturer: vidaXL