General description Please measure your table and umbrella before ordering. The CSPARKV Umbrella Cone is designed to fit umbrella poles up to 1.5" in diameter and table openings or base holes from 2" to 2.5". It is waterproof and helps prevent the umbrella from leaning or moving, reducing the risk of breaking glass tables. This cone also minimizes umbrella sway, although it does not completely prevent spinning. Technical specifications Dimensions: 5.7 × 3.8 × 3.8 cm Fits umbrella poles: Up to 1.5" in diameter Table opening/base hole diameter: 2" to 2.5" Usage Prevents scratches, dents, and damage to the umbrella pole Keeps the umbrella shaft straight and centered in the hole Eliminates vibrations and rattles Ideal for patio furniture, cafes, bars, milk tea shops, courtyards, or other glass patio tables Installation Easy to install in seconds Simple to remove for storage