This umbrella base will perform the necessary task of holding your umbrella in place, and it will continue to do the job in style. Its poly-resin, rust-resistant coating will stay glamorous for years upon years to come. You can use it with multiple sized umbrellas-- the base has a coupler to allow fitting of 1.5" to 1.89" diameter umbrella poles. Plus it has a hand-turn knob for securing the umbrella to the base. Poly-resin, rust resistant. Hand-turn knob for securing umbrella. Spiral pattern and gunmetal grey finish. Galvanized Screws. Fits diameter 1.5" and 1.89" pole. Product Size: (W) 20.08 in. x (D) 20.08 in. x (H) 14.17 in.