The Simpson Strong Tie ABW44Z Metal Post Base is a galvanized steel fastener designed for square-shaped metal posts. With a 1" height and 4" width, this product is perfect for securing posts in the ground with a 16 gauge steel mandrel. The open end design and single hole make installation quick and easy, while the durable construction ensures long-lasting performance. Whether you are a contractor or a homeowner, this metal post base is a reliable choice for your next project.