Suitable for vacuum cleaner without wire for Moosoo K12 K12 Pro K13. Made in France. Made of high quality material, it can block 99.97% of dirt, sawdust, dust, wood chips, pet dander and other particles as small as 0 ,3 um, so it can reduce dust and other allergens in the air you breathe. In normal maintenance, it is easy to install, just disassemble the tank dust, twist and remove the old filter to replace the new replacement filter. Washable and reusable K12 filter, It is recommended to replace the vacuum cleaner once every 2-3 months to maintain the best performance. Package Content: 4 x Filters. Your satisfaction is our goal! If you have any questions when using our products, please feel free to contact us. Please feel free to contact us, we will provide you with a satisfactory answer.