Heavy 150 lbs of Weight: 150 lb of heavy duty steel when filled up will keep your 6' - 11' patio umbrella in place. With this much weight you do not have to use with a table or other additional weights. However, if you live in a very windy area it will fit under some outdoor tables if you want maximum weight for your umbrella. Best use is as a planter stand with beautiful plants. Rust Resistant Material: The heavy duty steel cube shape base is protected with a TIGER Drylac powder coating to help prevent rust, chipping, peeling and corrosion for years to come. 2 Built-In Lockable Wheels: This base is not only designed for durability, it is easier to move with the built-in lockable wheels. The square metal cube is basically a rolling planter stand. Fillable Planter with Drain Hole:This flowerpot type base with drainage holes at the bottom is versatile. You can put your favorite plants in it for viewing, or use it to support the umbrella. No matter how you use it, it will stand the test of time through the high-quality materials used. Adjustable Base Tube with Hand Tightening Knob: The heavy duty steel base tube is the part that holds your umbrella in place. This adjustable base tube will hold an umbrella pole up to 2" diameter. The hand tightening knob offers a secure grip for tightening the position of the umbrella pole. Turn it one way to tighten into place and the opposite way to loosen it.