24.7 kg Umbrella Base Stand: This umbrella base stand is built from all-weather resin and strong iron for enhanced durability. Weighing a solid 24.7 kg, it ensures superior stability, making it ideal for larger outdoor umbrellas and able to withstand the elements for long-lasting outdoor use All-Weather Finish: The metal surface of this patio base stand is well-coated with a water-resistant coating, ensuring that the color does not fade in humid weather. There is also less worry of getting any color on cloth while carrying or on the floor when kept in storage Broad Base: With a diameter of 50.6 cm, this outdoor umbrella base stand offers enhanced stability. Its expanded size ensures a more secure foundation for your market umbrella, even in breezy conditions Thumb Screw: Two rotary knobs are provided on the side of the center pole to settle the patio umbrella on this base stand, by simply turning the knob left and right, the patio umbrella can be fixed or detached from this outdoor umbrella base stand Clear Instruction: This rolling base stand requires the least assembling process. It is noticed that this patio umbrella base stand is compatible with 3.8 cm, 4.8 cm, 5.7 cm diameter poles, please check the compatible size carefully before the purchase