41 x 51mm, large contact area, provides a more stable umbrella stand with better wind resistance to help protect your tackle box. Foldable design allows for compact storage and stays secure after installation. Interior lined with nylon plastic; not intended to support sunshade accessories. Compatible with parasols having a pole diameter between 20 and 26.5 mm. Surface treated with deep anti-oxidation process and anodized coating to enhance resistance to corrosion and wear. Product dimensions: base 5.1 x 4.1 cm, height 6 cm. Fully foldable, enabling convenient storage without disassembling parts. Product Name: Foldable Umbrella Stand Material: Aluminum Magnesium Alloy Umbrella Stem Size: 20–26.5mm Process: CNC Integrated Molding Product Size: Base 5.1 x 4.1 cm, Height 6 cm Surface Treatment: Deep Antioxidant Treatment Function: Secures parasol or umbrella Package Includes: Set of 2 umbrella stands