VECELO 4-Piece Heavy-Duty Cantilever Offset Patio Umbrella Base/Stand OutdoorSturdy 4 Panel Design: This detachable four panel square umbrella base, interlocked with four metal fittings, ensures heightened flexibility to meet diverse needs. Good for cantilever and offset umbrellas. Our umbrella stand outdoor base provide stable support. Durable Materials: Made from HDPE material, the fillable patio umbrella base resist oxidation, corrosion, and cracking, maintaining its strength and color even under prolonged outdoor exposure