Fits most pole sizes: This resin parasol base is suitable for market parasol poles with diameters of 38mm to 48mm. Please measure your umbrella pole diameter in advance to ensure that our base can fit well.For added stability: The outdoor umbrella stand is equipped with an adjustable fixing knob on the pole to keep your sun umbrellas upright and in place, even if your umbrella poles can't exactly match.Outdoor-ready: The bottom part is made of resin, preventing chipping, peeling, aging, and more. Furthermore, the pole is made of steel with a powder coating that can support the umbrella steadily while withstanding outdoor elements.Product info: Net Weight: 18kg. Overall Dimension: 53.5 x 33H cm. Pole Size: 5.7 x 25H cm. Easy assembly required.Suitable Outsunny parasol SKUs: 01-0215, 01-0583, 840-025, 840-025GY, please consult us for product links.