Crafted from rust-resistant poly resin, our patio umbrella base ensures years of reliable use. The 42 lbs. base features a convenient hand-turn knob, providing a secure hold for your umbrella. Enhance the charm and elegance of your patio with its attractive decorative pattern and gunmetal grey finish. Designed for 1.5 in. and 1.89 in. poles, our multi-use umbrella base offers compatibility with various patio umbrellas. With its durable construction, this square umbrella base offers excellent stability, even in windy weather. Made from UV-resistant resin, the umbrella base withstands outdoor elements and maintains its appearance over time. Color: Black. Material: Aluminum.