Best Choice Products 4-Piece 155lb Capacity Heavy-Duty Cantilever Offset Patio Umbrella Stand Square Base Plate Set w/Easy-Fill Spouts for Water or Sand – Black

Specifications:
Overall Dimensions (One plate): 19.7″(L) x 19.7″(W) x 3″(H)
Overall Dimensions (Four plates): 39.7″(L) x 39.7″(W) x 3″(H)
Capacity (per plate): 15L of water, or 50 lbs. of sand
Weight: 19 lbs.
Material: Plastic
No assembly required
NOTE: Crossbar not included.
Package Includes:
(4) Base plates

BCP SKU: SKY3257

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STURDY 4-PLATE DESIGN: Made with interconnecting pins to lock your umbrella base in place and secure it for hours of enjoyment (Note: Crossbar base not included)
EASY-TO-FILL SPOUTS: Each plate is built with a fill spout and a twist cap to create a water-tight seal for quick and easy refills, ballast disposal, and relocation
HIGH WEIGHT CAPACITY: The plates can hold up to 15 liters of water (per plate) or 50 pounds of sand (per plate), so your patio umbrella will remain upright in heavy winds
HEAVY-DUTY & WEATHER-RESISTANT: Made of HDPE plastic to withstand impact and constant movement, and treated with a weather-resistant coating
OFFSET UMBRELLA ESSENTIAL: Provides a solid anchor for compatible umbrellas and protects them from incidental damage caused by falls and harsh weather (Search: SKY5681 or SKY5248); OVERALL DIMENSIONS (per plate): 19.7″(L) x 19.7″(W) x 3″(H); Capacity (per plate): 15L of water, or 50 lbs. of sand