Our 150 lb. Smooth Base for 11 or Larger Umbrellas features a scratch-resistant powder-coated aluminum finish for added durability.Four finishes including Bronze, Black, Champagne and Silver . Cast aluminum base with powder-coated finish. Use with outdoor umbrellas up to 11 in diameter. Accepts umbrella poles up to 2" dia. Umbrella pole reducer sleeves included. Minor assembly required. Always close umbrella when not in use, or in inclement weather. At Frontgate, our primary focus is quality. We guarantee that every product we sell will stand up to the supreme test our customers' satisfaction. To learn more about our policies, visit our Shipping & Processing, Returns & Exchanges and Warranty & Price Guarantee pages.