This portable umbrella base is perfect for drinks on the deck or shading a busy outdoor dining area. Made with commercial-grade aluminum finished in silver to complement any umbrella shade. Filled with 150 pounds of concrete, this base is great for freestanding use when paired with an 18" stem. Select between standard 1.5" pole width or an extra large 2" pole width. Screws with an easy grip make tightening and securing an umbrella a breeze. A pair of wheels allow for convenient mobility of large umbrellas.