This multi-functional outdoor umbrella stand is equipped with 4 rotary knobs, which can ensure that when the outdoor umbrella is fully fixed, problems such as gap loosening, umbrella frame rod sliding, and umbrella frame tilting will not occur. Its adjustable range is Φ1.12 in. - 2 in. This umbrella stand uses a heavy-duty metal base, which has excellent anti-rust performance. It is not afraid of wind, sun, rain, and is sturdy and durable. In terms of applicable scenarios, the bottom design is ingenious and suitable for installation on concrete, wooden decks, and lawns. All the required installation accessories are included, easily meeting the needs of various venues. In terms of installation and use, the patio/pier umbrella base bracket has a wide range of uses. It can not only be used as an umbrella stand but also serve as a flagpole bracket, light pole bracket, selfie camera bracket, shade sail pole bracket, etc. and is suitable for various places such as residential and commercial areas. Color: Black.