Three Types of Installation-Three functional uses can be switched at will without damaging the base, as a granite umbrella stand tube with spacers placed at the bottom of the granite to lock it in place, as an umbrella stand base with screws mounted directly on the base concrete or as an outdoor umbrella stand on the lawn with the base anchors inserted directly into the lawn Adjustable - The universal outdoor umbrella stand can be adjusted according to the size of the umbrella pole, suitable for umbrella poles from 0.7-1.5 inches. Dual fastening knobs ensure that the umbrella remains stable in strong winds or bad weather and does not tip over easily Upgraded design - Patio umbrella stand holder with ground spike fixing made of heavy steel. Rugged all-weld and all-covered black powder coating process for enhanced durability and rust protection for both indoor and outdoor use Multi-Functional Umbrella Stand - Removable inground umbrella stand anchor with base and anchor combination, it can be mounted on lawns, concrete or decks, multi-purpose use, provide more choices for umbrella stand, deck mount umbrella stand is a versatile addition to your outdoor space Widely Used - Metal grass umbrella ground stake provides free movement, according to your needs can be used in any outdoor space that needs shade and sun protection, whether you are camping in a garden, courtyard, beach, wilderness, or deck, dock, terrace can be used The umbrella base provides four screws, which are threaded through four round holes at the bottom of the base and then screwed into the wooden deck. This allows the base to be fastened to the deck so that your umbrella does not spin and move around in the wind and does not take up foot space on the freestanding support