Ensure maximum stability for your patio umbrella with this heavy-duty, fillable base. Designed to accommodate 6-10 ft umbrellas, it can be filled with 57 lbs of water, 66 lbs of sand, or 88 lbs of wet sand to provide a secure foundation. The base includes three adapter rings, making it compatible with umbrella poles measuring 1.89", 1.5", and 1.42" in diameter. Two adjustable knobs keep the pole firmly in place. Made from durable HDPE material, this umbrella stand is built to withstand outdoor conditions while offering easy, tool-free assembly.