1. Practicality: This replacement kit is designed for Pro B402HW /Pro B402CN dust mite vacuum cleaners, ensuring a perfect fit and providing optimal performance for your device. It is a must-have household cleaning tool and an indispensable accessory for maintaining a clean and hygienic home environment. 2. Complete replacement kit: which can be used normally after installation to maintain the life and continuous performance of the dust mite machine. It prevents rapid wear and tear, making it a reliable choice for daily cleaning, and provides replacement parts for efficient cleaning. 3. Component set: It has a main brush, filter and for cleaning surfaces and capturing fine dust. Make sure you have replacement parts to keep your dust mite machine in optimal working condition for longer. 4. User-friendly installation: These accessories are designed to be easy to install and can be quickly installed in your dust mite machine. The design meets production standards and is easy to install.