This classic black outdoor umbrella base is designed to provide reliable support and long-lasting performance for your patio umbrella. Constructed from durable, wear-resistant HDPE material, the base is built to withstand outdoor elements such as wind and rain while maintaining its shape and strength over time. Its clean black finish blends easily with a wide range of outdoor furniture styles. The adjustable tightening knob and included plastic insert allow the base to accommodate different umbrella pole diameters, while the height-adjustable pole helps secure umbrellas ranging from 6 ft. to 9 ft. in size. Equipped with 4 lockable wheels, the umbrella base can be moved effortlessly to reposition shade throughout the day, then locked firmly in place to prevent unwanted movement. Once installed, the umbrella remains stable and wobble-free, offering dependable sun protection for patios, decks, poolside areas, and other outdoor spaces.