This outdoor umbrella stand features a wide round base, which is large enough to stably hold the umbrella. The product is equipped with 2 hand - turn tightening knobs. Through the double - lock design of an inner hole and an outer knob, the umbrella can be firmly fixed to the base, preventing shaking. The plastic inserts on the top of the steel pipe are compatible with umbrella poles with a diameter of Φ1.5 in. (38mm) or Φ1.9 in. (48mm), showing excellent compatibility. It is made of durable HDPE material combined with a steel pipe, having excellent rust - proof and anti - corrosion properties. It can withstand various weather conditions, is sturdy and not easily eroded, making the umbrella stand durable and reliable. The appearance adopts a simple line design, and the classic black color shows elegance. Whether placed on the balcony, in the yard, or beside the swimming pool, it can perfectly blend with different decoration styles and become an excellent partner for your umbrella. When the umbrella stand is filled with water and sand, its maximum load - bearing capacity can reach 50lbs. However, it should be noted that water and sand are not included with the base. Such an umbrella stand, which combines stability, durability, and aesthetics, is sure to add convenience and comfort to your outdoor leisure time.