The 4-Piece Weighted Umbrella Base by LOVOIN is perfect for securely supporting your cantilever patio umbrella! This fillable base is meant to be used with offset or cantilever umbrellas with a cross-bar base. Each plate features a spout to help with quick and convenient filling with sand, as well as easy cleaning and storage. The plates are made of sturdy High-Density Polyethylene (HDPE) plastic and can hold up to 37.5 pounds of sand for a total of 150 pounds to ensure your umbrella will stand up to the wind and elements. With a convenient foldable handle on each plate, they are easy to move and position after they are filled. Base Material: Plastic Compatible Pole Size: 1.9 Removable Pole Neck: Yes Compatible Umbrella Accessory Part Number: W008166379 Durability: Rust Resistant; Fade Resistant; UV Resistant; Weather Resistant; Water Resistant Compatible Umbrella: Cantilever Imported: Yes Product Care: Store indoors or cover when not in use Base Fill Material: Water; Sand.