41 x 51mm, large contact area, more stable umbrella st, better wind resistance protect Kraftriss tackle box.Foldable design, compact storage size , does not hang after installation.The interior is protected by a nylon plastic does not support the sunshade. It is suitable for parasols with a diameter of 20 to 20 26.5 mm.The surface is treated with a deep anti-oxidation treatment, the anode is coated to improve the resistance to corrosion. corrosion wear.Product dimensions: base: 5.1 x 4.1 cm - Height: 6 cm - Foldable - Allows parts to be stored without disassembly. :Product Name: Foldable Umbrella St.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: fixed parasol, umbrella. Contents:Set of 2 umbrella sts.