The perfect solution for weighing down the cross base of an offset patio umbrella . YMOUTDOOR manufacturer the base plate weights are sold in a set of 4pcs with Factory Price, so you can choose to use all 4 or use one on each side. 4PCS Fan Shaped Umbrella Base Stand each weight features durable plastic construction with an easy-fill spout so each base weight can be with 43.75 lbs of water or 50 lbs of sand. YMOUTDOOR the water sand base is heavy enough to stand up to severe wind and weather, and the rust-proof coating will keep your deck or patio clean and stain-free. We can accept custom order to meet your purchasing requirements.