Features 1. Made of high-quality materials for durability and safe use. 2. Contains 4 filter elements and 4 check valves. 3. Recommended replacement every 6 months for optimal performance. 4. Easy to install and replace; simply disassemble and swap out components. Specification Material: Plastic Color: Blue, White Size: Filter Element: 9.52 cm, Check Valve: 9.15 cm Weight: 110 g Package Includes: 4 x Filter Elements 4 x Check Valves When shopping, please review the product size and dimensions to ensure compatibility with your needs. Detailed product information, including features and specifications, is provided in the title and description. We want you to be completely satisfied with your purchase. If you have any questions or concerns, please . We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it.