Specification Brand : HealSmart BulletPoint1 : High-quality material: Our patio umbrella base stand is made of rugged, durable HDPE plastic, all weather resistant, steel pipe and would not be corroded easily and lasted use. Tips: Use the base with patio table for better BulletPoint2 : Smart design: With two manual tightening knobs, the umbrella can be fixed to the base tightly, tighten the adjustable knob in the steel pipe to ensure optimal strength and stability no matter the umbrella's pole size BulletPoint3 : Water or sand filling: Base can be weighed down with up to 50 pounds of sand or water, and can be easily transported when emptied. Do not fill with water at or below 32°F to prevent freezing and cracking. Notice: Water and sand are NOT included BulletPoint4 : Wide application: The base holds various umbrella sizes. Plastic insert on top of steel tube is ideal for Φ1.5"(38mm)-Φ1.9"(48mm) umbrella pole. You just need to insert the umbrella pole into the base, and tighten the knobs BulletPoint5 : tylish design: The beautiful and stylish base can be widely used in courtyards, gardens, terraces, swimming pools, restaurants and other scenarios as well as a variety of residential and commercial uses Color : Black ExternallyAssignedProductIdentifier1 : 840166288931 ExternallyAssignedProductIdentifier2 : 0840166288931 IncludedComponents : bracket InstallationType : Free Standing IsAssemblyRequired : 1 ItemDisplayDimensions_Depth : 33.75 inches ItemDisplayDimensions_Height : 8.25 inches ItemDisplayDimensions_Length : 33.75 inches ItemDisplayDimensions_Width : 33.5 inches ItemDisplayWeight : 31.1 pounds ItemName : HealSmart 20Inch 50Lbs Durable Fillable Patio Umbrella Base Heavy Duty Stand for Outdoor Lawn, Deck, Poolside, Black ItemPackageDimensions_Height : 57.15 centimeters ItemPackageDimensions_Length : 16.256 centimeters ItemPackageDimensions_Width : 51.308 centimeters ItemPackageQuantity : 1 ItemShape : Square ItemTypeKeyword : patio-umbrella-bases ItemTypeName : for Outdoor Lawn, Deck, Poolside Manufacturer : HealSmart Material : Polyethylene, Metal ModelName : Patio Umbrella Base Heavy Duty Stand ModelNumber : 20Inch 50Lbs Durable Fillable NumberOfBoxes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : LGBRLABASEROUND-F Pattern : Solid ProductDescription : Spec: Material: plasticSize: 39*10CMThe caliber is 3.5CM, plus the sleeve is 2.5CM. If you want to insert the 3.2 caliber, you need to take out the cuff and use it.Use the venue: beach park fishing, field fishing, etc., as long as it is not difficult, you can use it! Package included:1*Umbrella plug