The base of the middle column umbrella is 45*22*9.5cm 38-48mm

▸ Material Type: Natural Granite Substrate
▸ Plate Thickness: 20mm Standard
Specification ▸ Physical Density: 2.6-2.8g/cm³
▸ Compressive Strength: ≥200MPa
▸ Surface Process: Mirror Polishing/Fire Burnt Surface Treatment