Tropishade Commercial Grade Steel Plate Umbrella Base, Black, 50 lbs One solid A grade durable steel plate. It won't crack or break. Black powder coating rust resistant Stainless screws and bolts to secure base tube 21" diameter with a perfect round shape weight 50 lbs. 13" height with base tube; Fit most of patio furniture Base tube can fit 1 3/8" or 1 1/2" or 1 3/4" umbrella poles. HQ base Made in Taiwan.