About this item Stability base for large umbrellas is just 6 lbs. in weight, when filled with water, it weighs up to 47 lbs. to secure patio umbrellas against light winds Lightweight design for easy handling (base is approximately 6 lbs. when Empty). no table required for this heavy-duty patio umbrella base Freestanding design works with all Stromberg Brand patio umbrellas and many other patio umbrellas that have central poles that have different diameters I. e. 38mm/1. 5”, 33MM/1. 3” and 25mm/1” A 10” tall tube, with two tension screws, helps your umbrella’s central pole to stand straight without the need for a table’s support Superior quality patio base and exclusive design