Construction: Patio umbrella is built with a powder-coated steel frame and cement base, delivering a durable, rust-resistant option without the hassle of a fillable base. Stability: Offering a taller 16" receiver pole for added stability with a security set knob to easily tighten around the umbrella pole locking it in place. Designed for under-table use with a clearance of 19", making it ideal for compact dining and gathering spaces. Suited for use on any umbrella up to 1.5" in diameter Perfect for restaurants, cafés, resorts, and residential patios requiring long-lasting performance.