4PCS Square Shaped Water Or Sand Filled Umbrella Base

4-Plate Design: Made of heavy-duty HDPE plastic with weather-resistant, 4 plates are interconnected to lock your umbrella base in place and secure it for enjoyment. Water or Sand Filling: Bibana cantilever base can be filled with sand, gravel or water to increase the weight of base, and the total weight is approximately 176 lbs. Easy to Fill: Each plate is featured with a filling port and a screw cap, which can be quickly filled, and then the umbrella can be safely held in your garden, yard, or elsewhere. Package Information: Perfect for all kinds of cantilever offset patio umbrellam(Cross bar base is not included). Overall Dimensions: 39.7"(L) x 39.7"(W) x 3"(H)