Outdoor Fillable Umbrella Base with Wheels Water Sand Weighted Umbrella Stand-Black

. Filled with water, sand, or mixture for added stability. 4 universal wheels for mobility. 2 lockable wheels for easy parking. 3 adapters(1.3", 1.5", 1.9") and adjustable knobs for 1.3"-1.9" umbrella poles. Water injection hole makes it easy to fill and drain. Selected PP material for long-term use. Easy to assemble with simple structure