Applicable model: The vacuum cleaner filter element is suitable for Q6, Q7, Q8, WQ61, WQ71, WQ81. Tightly adjust the position of the original hole with precise shape.Regular replacement: Depending on the frequency of use, it is recommended to replace the spare parts every 2-3 months to ensure that the machine works at its best. Improve cleaning efficiency: the filter element of the vacuum cleaner can reduce allergens such as dust and pollen entering the air you breathe.Easy to install: The vacuum filter is easy to install and disassemble, convenient for daily maintenance, you can replace the old parts or damaged to achieve greater strength.Premium Material: Made of high-strength environmentally friendly ABS and high-efficiency air-jointed materials to ensure the best performance and a healthy lifestyle. Note : The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.