General description This AIPERQ Heavy Duty Umbrella Stand Holder is designed for versatility and stability, making it ideal for use on patios, railings, beaches, yards, balconies, boats, and tailgates. It features a double knob design that accommodates umbrella poles with diameters of 2.8cm, 3.8cm, and 4.8cm, ensuring a secure fit. Technical specifications Material: Heavy steel Surface treatment: Black paint, rust-proof Dimensions: 10cm bottom plate iron pipe Includes: Screws * 4 Installation Quick and easy installation Large clamp can be attached to various surfaces including benches, fences, bleachers, tailgates, boats, and posts Position can be adjusted as needed Usage Suitable for securing umbrellas in various outdoor settings Space-saving design allows for more usable area on balconies and patios