Features: * Versatile Size Options: The reducer rings come in two different sizes (38mm and 48mm), allowing you to choose the one that fits your specific umbrella stand, ensuring optimal stability and performance. * Robust Stability: Despite their lightweight design, these adapters provide stability under heavy loads, making them ideal for outdoor use and ensuring your umbrella stays secure even in windy conditions. * Easy Installation: Simply insert the appropriate number of reducer rings to achieve the desired diameter for your umbrella stand, making setup a simple process without the need for additional tools. * Complete Package: The set includes four reducer rings, four M8 threads, and two umbrella holes, providing everything you need for successful installation and increased usability. * Reusable Design: Designed for multiple uses, these rings can be easily removed and reinserted, allowing you to switch between different umbrellas or stands without needing new accessories. Specifications: * Product Name: Umbrella Base Holder Accessories. * Material: Plastic. *Size: As shown. *Color: Black. *Number of pieces: 10. Package contents: 4 tubular mouth sleeves, 4 screws, 2 umbrella caps. Note: 1. The actual color of the item may be slightly different from the images shown on the website due to many factors such as monitor brightness and light brightness. 2. Please allow slight manual measurement deviation in the data.