Feature:1. High-Density Polyethylene Material: Our umbrella base is made of HD-PE high-density polyethylene material, which is rust-resistant, ensuring its stability and durability in all weather conditions. This makes it an ideal choice for outdoor use in your garden, patio, or beach.2. Sand or Water Filled Base: Our base can be filled with sand or water to increase its stability. This feature allows you to adjust the weight of the base according to your needs. If you need to move the base, simply empty the filler for easy transportation.3. Universal Fit: The plastic insert at the top of the steel tube is an ideal fit for umbrella poles of 3.5-3.8cm/1.4-1.5inch. Simply insert the umbrella pole into the base and tighten the knob. It's suitable for beach umbrellas, center pole umbrellas, garden umbrellas, banana umbrellas, Roman umbrellas, and cantilever umbrellas.4. Stylish and Versatile: Our umbrella base features a stylish design that can blend in with any decor. It's perfect for various residential and commercial uses. It can be widely used in courtyards, gardens, patios, swimming pools, restaurants, and more.5. Easy to Use: Our umbrella base is easy to use. Simply fill it with sand or water to increase its stability, insert your umbrella pole, and tighten the knob. It's a hassle-free solution for securing your umbrella.Specification:Product Material: HD-PE high-density polyethyleneProduct Color: Gray, Black (optional)Product Size: 38 * 14cm/15 * 5.5inchSuitable Rod Diameter: 3.5-3.8cm/1.4-1.5inchPackage List:1 * Umbrella Base