Amazon.com : Giantex Square Umbrella Base, 40 LBS Steel Heavy Duty Patio Market Umbrella Stand with 3 Adapters, 25 Inch Outdoor Plate Stand with Adjustable Foot, Suitable for Backyard, Deck, Poolside, Patio :
Pellebant 40 lbs. Concrete and Steel Patio Umbrella Base in Black PB-UB014BLK - The Home Depot
Amazon.com : T&Jero 40 lb Round Heavy Duty Patio Market Table Umbrella Base Stand Weight for Outdoor, Bronze : Patio, Lawn & Garden
Gymax Square Weighted Patio Umbrella Base Stand 40 lbs Outdoor w/ 3 - Bed Bath & Beyond - 35636596