The 175 lb Fiberglass Base by Fiberbuilt with its diameter is ideal for the deck, sidewalk cafe, poolside, or backyard. The gel-coated reinforced molded fiberglass shell is easily filled with concrete on location. A through-bolt securely attaches the umbrella pole to the base for maximum base support. No rust or rot due to layered fiberglass construction. The Fiberbuilt 175 lbs Umbrella Base is available in seven different colors.