Keep your patio umbrella secure and stable with the Autlaycil Patio Umbrella Base! This HDPE and steel umbrella base includes two manual tightening knobs so you can easily and quickly adjust the umbrella pole size. The base can also be filled with water up to 48.4lbs for added stability. Enjoy your outdoor space with worry-free security thanks to the Zenova Patio Umbrella Base! Additional Details: