The umbrella base is a critical component to the Durabrella system. This base is designed to be mounted to the ground, ideally a concrete patio or another substrate that can withstand upward force of roughly 1,000lbs. Bases are powder coated black. 
 
Product Specs:
Base plate dimension: 5"x 5"
Base plate anchor hole size diameter: 0.5"
Base plate pole sleeve height: 12"