Material: Constructed from solid steel with a smooth, black powder-coated finish, this post base delivers excellent water and rust resistance. The coating not only enhances the visual appeal of the bracket but also helps extend its overall lifespan.Compatibility: Designed to fit standard 4x4 post base, this post base features an actual inner dimension of 3.6" x 3.6", with a length of 5.4" and a height of 5.6". Suitable for installation on both wood and concrete surfaces.Applications: A versatile support solution commonly used in construction, this post base is designed to securely hold columns or structural elements in place. Ideal for projects such as porch fences, backyard stairs, outdoor garages, mailboxes, gazebos, and park corridors.Package Includes: 1 x wrench, 24 x expansion anchors for concrete surfaces, and 32 x Phillips head self-tapping screws for 4x4 post attachment. All screws come pre-installed inside the base for convenience.