This 4x4 pergola post base bracket makes it easy to secure the post of your DIY wood pergola to a secure foundation (i.e. cement pad, concrete footing, landscape topper, deck footing, etc.). It's made of commercial grade 14-gauge steel (approximately 2.0mm thick) with protective weather-resistant powder coating, ensuring it will look as amazing in ten years as it does now. The steel pergola base bracket is made for 4x4 wood posts (actual size: 3.5 x 3.5 inches) and includes stainless steel screws for securing the post into the bracket. Wood (lumber) not included.