Surface Mounts make the installation of your New England Arbor product faster, cleaner and easier than you ever thought possible. In other words, leave your shovel and wheelbarrow in the garage. No need for concrete either. Made from top-quality galvanized steel, testing has proven that this mounting system results in a very strong and secure installation. Set of four 5" mounts. Sold as an option for arbors not including a ground-mount system.