The replacement knob parts are designed to seamlessly integrate with most umbrella bases, offering a practical solution for worn or damaged components. Their ergonomic design simplifies adjustments, making them suitable for various outdoor settings, including patios, decks, and areas. Features -Color:Black -Material:Metal, plastic -Size:4.50X4.50X4.50cm/1.77X1.77X1.77in -Stable height adjustment: adjust your umbrella's height with ease using precision screws, optimizing shade coverage for different outdoor scenarios -Weatherresistant materials: built to withstand outdoor weather, these umbrella tightening knob parts offer reliable performance and durability in diverse weather conditions -Simplified setup process: experience quick and straightforward installation with parts that require no special tools, saving time -Universal fit design: compatible with a variety of umbrella models, these umbrella base screws provide flexible options for different outdoor setups -Secure wind resistance: ensure your umbrella remains stable and secure in windy conditions with parts designed for enhanced support and safety Package list: 2 x umbrella base tightening knobs