Description: Material: Crafted from pp material, these water purifier filter bottle cover offer long-last durability and reliability, making them a practical choice for maintaining your water purifier system Feature: These water purifier filter core cover are engineered to fit securely onto your existing filtration setup Water Dispenser Parts: These filter caps are designed as essential components for water purifiers and dispensers, ensuring a great fit and optimal performance Easy Installation: Designed for straightforward installation, these filter caps allow you to effortlessly maintain your water dispenser's efficiency Package Includes: Each purchase includes two filter caps, providing you with a spare or the ability to replace both at once for consistent water quality Specification: Material: PP Size Chart: 25 Tooth: Outer Diameter: 11cm/4.33inch, Inner Diameter: 9.3cm/3.66inch 30 Tooth: Outer Diameter: 9.5cm/3.74inch, Inner Diameter: 8.5cm/3.35inch Package Includes: 2 Pieces Water Purifier Filter Bottle Cover Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.