[Perfect Fit]: Compatible with E series E5 (E5134) E6 (E6198) E7 I series i7 (7150) i7+i7+(7550) i1+(1552) i4+(4550 4552) i3+(3550) ) i6+(6550) i8+(8550) j7+(75%). This equipment set is as original equipment, with precise installation and convenient installation. [Three-effect filtration technology]: Two high-quality rubber brushes are perfectly matched, one for removing dirt and the other for cleaning dirt. The innovative side brushes can penetrate into corners and edges to remove more hair debris. The cleaning filter can block 99.97% of pollen, dirt, dust, pet dander and other particles as small as 0.3 microns. [Easy to Clean and Replace]: Replacement and easy without tools. Clean and replace parts regularly to improve suction and extend service life. For best results, the edge brush and filter should be replaced every 2-3 months. The multi-surface rubber brush should be replaced every 6 months. [High-quality Materials]: Use high-strength environmental protection materials to better