Upgrade your outdoor structures with our 6x6 post base. This set of 2 post anchors has an inner size of 5.6x5.6 inches and is made of 13GA thick solid steel, coated with black powder for rust resistance. Its unique design features a bottom partition that separates the wood from the ground, preventing rot, and a middle square box for added stability. It's incredibly versatile, suitable for supporting porch railings, pergolas, fences, and more. Installation is a breeze with the included wrench, 12 expansion anchors for concrete floors, 12 socket head wood screws for wood floors, and 16 Phillips head self - tapping screws for 4x4 post fixation. Whether you're building a new deck or a mailbox post, this post base is the perfect choice for a long - lasting and stable structure.