This extendable parasol base is made of sturdy steel. It bears a locking bolt to maintain the umbrella's pole fixed in the 58 mm tube. Three adapters are included, enabling it suitable for parasol poles with diameters of 35, 38 and 48 mm. In addition, the adjustable base can be easily extended to a larger diameter of 100 cm, which is suitable for weights with a maximum size of 50 cm. In consequence, this steady umbrella stand will definitely make an adorning as well as down-to-earth addition to your outdoor living space owing to its striking design!