No digging means a faster, cleaner and easier way to install your arbor than you ever thought possible. In other words, leave your shovel and wheelbarrow in the garage no need for concrete, either! The Aussie Auger System is the ideal solution to save you time and unnecessary stress. Sold as an option for vinyl arbors not including a ground mounting system. Available for 3.5", 4" and 5" posts. 3.5" fits Brookfield and Springfield Arbors. 4" fits Nantucket, Fairfield and Newport Arbors. 5" fits Yorkshire, Manchester and Ashbury Arbors.