This 50 pound powder coated steel umbrella base fit perfectly for under table use with a total size of 20″ x 20″ x 8″. Use this umbrella base in combination with a Ubrace so your umbrella doesn't fly away. Suitable for poles of 1.5" diameter. Umbrella bases are necessary for picnic tables with umbrellas. Call our friendly staff for a quote on a picnic table, umbrella, and umbrella base.