This heavy-duty base keeps outdoor umbrellas from flying off into the sunset with every passing gust of wind! Each base anchors a freestanding or table umbrella, with a concrete center and a steel shell that resists the wear and tear of the elements. The base compliments existing patio d-cor with its attractive neutral colors and is a sturdy 50 lbs to better secure umbrellas up to 9 feet in diameter!Product Features-50 lb umbrella base-Powder-coated steel shell-Concrete center for added weight-Compatible with both freestanding and table umbrellas-Designed to securely hold up to a 9-foot umbrella-Pole opening size: 1.75"