Best Choice Products 123lb Capacity Fillable Mobile Umbrella Base Heavy Duty Market Stand for Patio, Deck, Poolside w/ 4 Wheels, 2 Locks, 2 Knobs, Wind-Resistant Design – Black

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EASY MOBILITY: A set of four wheels allow you to effortlessly move this base back and forth while two locks keep your shading in place
REFILLABLE RESERVOIR & TIGHTENING KNOBS: 2-fold stability system uses a pair of tightening knobs to ensure a secure fit while the fillable base holds up to 123.2 pounds of sand or 37 liters of water.