Fit 1.5inch and 1.35inch Round Umbrella Poles: Our umbrella sleeve adapter is designed to fit perfectly with umbrella poles that have diameters of 1.5 inches and 1.35 inches. This fit ensures a secure connection, preventing wobbling or tilting. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Designed for Single Threaded Pool Deck Sleeves: This pool umbrella holder is for single threaded pool deck sleeves (for Waterways and for Only!) and is NOT intended for use with umbrella stands and tables. Its precise design ensures seamless integration into your existing pool deck setup, providing an elegant and functional solution for securing your umbrella pole. No More Leaning Pool Umbrella: The pool umbrella pole stabilizer is engineered to enhance the stability of your umbrella, reducing the risk of accidental tipping or movement. By securely locking the umbrella pole into place, this pool umbrella sleeve adapter provides peace of mind during windy conditions or heavy use. The pool umbrella stabilizer sleeve not only improves safety but also extends the lifespan of your umbrella by minimizing wear and tear on the pole.