This 5-pack Compatible with JIXINMIYUE HX-606 & A9life SY01-Q8, the kit helps reduce blowback, manage pet hair and pollen, and maintain suction in handheld or in-car cleaning. Replacement is tool-free—remove the old filter and insert a new one. For best results, rotate and replace every 2–3 months based on use and environment. If rinsed, air-dry completely before reuse. Third-party compatible accessory; model names are used for compatibility reference only.