Features: Durable PC make 1.63inch umbrellas hole plug resists weather damage while ensuring secure stability in outdoor umbrellas bases. Precisions engineered for 1.63inch rod holes with easy installation, this caps prevents wobbling and protect against dust/water infiltration. Ideal for patio owners, managers, and enthusiasts seek reliable protections for umbrellas stands in high traffic environment. Perfectly secures market umbrellas on decks, or restaurant terraces while maintaining integrity against moisture and debris. Combines functional durability with aesthetic, serving double roles as both a protective barrier and outdoor furniture accessory. Specifications: Component: PC Inner Diameter: about. 42mm/1.64in Color: Clear Package Includes: 1pc Umbrellas Hole Rings Plug and Caps note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.