Two adjustable turn knobs: With two manual tightening knobs, the umbrella can be fixed to the base. There is a hole inside and a knob outside to fix the umbrella firmly. Do not fill with water at or below 32°F to prevent freezing and cracking
Water or sand filling: Base can be weighed down with up to 50 pounds of sand or water, and can be easily transported when emptied. Notice: Water and sand are NOT included. Suggestion: Use the base with patio table
Durable material: Made of rugged, durable HDPE plastic, all weather resistant, steel pipe and would not be corroded easily and lasted use. With good sturdiness, your pole won't sway easily
Easy to assemble: The base holds various umbrella sizes. Plastic insert on top of steel tube is ideal for Φ1.5'(38mm)-Φ1.9'(48mm) umbrella pole. You just need to insert the umbrella pole into the base, and tighten the knobs
Wide application: The beautiful and stylish base can be widely used in courtyards, gardens, terraces, swimming pools, restaurants and other scenarios as well as a variety of residential and commercial uses
