Umbrella Base, Half Round, Sand or Water Filled Patio Umbrella Stand Holder for Lawn, Deck, Backyard and Garden, Fit 1.5"or 2" Pole, BlackFITS HALF PATIO UMBRELLAS: Fits both 1. 5" and 2" diameter umbrella poles, which is designed with tightening knobs to secure poles. Please place it against a wall or other supports to avoid turning over FILLABLE DESIGN: Our parasol base can hold 40lbs of water or 46lbs of sand. You can also fill with dry sand and then add water to increase the weight. Features a filling port for easy use and clean QUALITY MATERIAL: HDPE base and steel pole ensures