This pool umbrella stabilizer adapter provides a simple, durable solution for securing umbrella poles and reducing wobble. Made from quality PP, it is wear resistant and built for long term use. Key benefits and features Durable material: Manufactured from polypropylene (PP) for strength and wear resistance. Broad compatibility: Fits umbrella hole brackets with diameters of 3.81 cm (1.5 inch) and 3.43 cm (1.35 inch), making it suitable for a range of pool and patio setups. Improved stability: Engineered to reduce tipping and wobbling, keeping your umbrella steady in light wind and everyday use. Compact and portable: Dimensions 4.5 cm x 6.1 cm (1.77 inch x 2.40 inch). Lightweight and easy to install, store, and transport. Simple replacement: Designed as a direct sleeve adapter to convert or adapt existing umbrella brackets. Practical applications Poolside umbrella: Use as a stabilizer insert for umbrellas mounted on above ground pool rails or brackets to reduce movement. Patio or deck umbrellas: Install in smalldiameter umbrella holes to improve fit and prevent wobble on patios, decks, and balconies. Home and courtyard setups: worn adapters or adjust umbrella pole fit for tables, freestanding bases, and other outdoor fixtures. What you get Package includes one pool umbrella stabilizer adapter. Material: PP Size: 4.5 cm x 6.1 cm (1.77 inch x 2.40 inch) Note Please allow slight measurement differences of 12 cm (0.390.79 inch) due to manual measurement.