Specification Brand : Houoto BulletPoint1 : Easy to install: This threaded adapter sleeve is easy to install, just push, twist and turn until it's fully inserted.You can easily screw it into the swimming pool deck or splash deck. BulletPoint2 : Proper Size: the pool umbrella stabilizer has an inside diameter of 4 cm/ 1.57 inches and a height of 3.5 cm/ 1.38 inches, suitable for mounting the 1 3/4 inch umbrella insert on your pool deck. BulletPoint3 : High quality materials:The umbrella sleeve adapter for pool is made of quality plastic material, UV resistant and corrosion resistant. BulletPoint4 : Convenient and practical:The umbrella pole stabilizer is lightweight and small,convenient to carry and use,can effectively stabilize your swimming pool umbrella from wobbling or tilting.This simple adapter works perfectly to hold pool umbrellas upright and secure. Simply unscrew cap on pool umbrella sleeve and screw in the adapter. BulletPoint5 : Wide Range of Usages: You can use it for swimming pool umbrellas, outdoor sunshades and beach umbrellas.You can use them anywhere you need, you can also send them to your friends. Color : WHITE FinishType : Chrome IncludedComponents : Storage Holder IsAssemblyRequired : 1 ItemName : Houoto 4 Pcs Pool Umbrella Stabilizer Adapter Threaded Adapter Sleeves for Outdoor Patio Deck (White) ItemPackageDimensions_Height : 17.8 centimeters ItemPackageDimensions_Length : 3.2 centimeters ItemPackageDimensions_Width : 17.3 centimeters ItemTypeKeyword : patio-umbrella-bases ItemTypeName : Pool Umbrella Stabilizer Adapter Manufacturer : Houoto Material : Polypropylene ModelName : Pool Umbrella Stabilizer Adapter ModelNumber : Umbrella Stabilizer NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : 00002 PowerSourceType : hand_powered ProductDescription : Product Introduction:This pool umbrella stabilizer suitable for standard courtyard umbrellas, can effectively stabilize your swimming pool umbrella from wobbling or tilting,preventing umbrellas from flying away in windy conditions. Material quality: Made of quality plastic material, UV resistant and corrosion resistant. Product specifications:The patio umbrella stabilizer internal diameter of 4 cm/ 1.57 inches and a height of 3.5 cm/ 1.38 inches for 1 3/4" Aquastar Pool Umbrella Insert. Please note that :The dimensions listed reflect the diameter of the umbrella shaft, not the holes on the pool deck. This umbrella pole stabilizer is lightweight and small,convenient to carry and use,has a wide range of applications.This was absolutely what you needed for drop in umbrellas poolside.