Specification: Color: Black Material: HDPE Overall Dimension: 40" x 40" x 2.5" Single Plat Water Capacity: 3.4 Gal/13 L Net Weight: 17.5 lbs Description: Keep your cantilever offset patio umbrella securely supported with this 4-piece umbrella base plate set. Made entirely from HDPE material, the base plates are designed to withstand outdoor weather conditions while providing dependable support for your umbrella. Each plate features an easy-fill spout with a screw cap, allowing you to quickly fill or empty the plates with water or sand while helping prevent leaks during use. The four base plates are designed with connection holes for locking pins (not included), allowing them to stay securely aligned when assembled. Each plate can hold up to 3.4 gallons of water or 5.2 gallons of sand, creating a weighted foundation for improved stability in outdoor spaces. When empty, the lightweight construction and built-in handles make transportation simple and convenient. For added convenience, the plates can be stacked together when not in use, helping save storage space. Suitable for patios, decks, gardens, poolside areas, and other outdoor settings, this umbrella base set offers a practical foundation for compatible cantilever offset umbrellas.