Features: Secure your pool umbrella effortlessly with this stabilizer sleeve adapter, designed to fit 1.5" and 1.35" umbrella poles for wobble frees stability in conditions. Crafted from PC and ABS materials, this adapter ensures durability while maintaining a snugly grip in single threaded deck pool sleeves. Ideal for pool owners seeking enhances safety and convenience, it’s for plastic sleeves with single threaded designs. Perfect for creating shaded relaxation zones on concrete, wood, or composite poolside decks during family gatherings or sunny afternoons. Its 1.77" x 2.40" design prevents tipping and simplifies installation, delivering year round reliability in harsh weather conditions. Specifications: Component:ABS Size:Approx.4.5x6.1cm/1.77x2.4inch Color:White Package Includes: 1pcs Pool Umbrella Stabilizer Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.