Perfectly Compatible: This replacement part is compatible with iRobot i7 i7 Plus i7+(7550) i8 i8 Plus i8+(8550) i3 i3 Plus i3+(3550) i4 i4 Plus i4+(4552) i6 i6 Plus i6+(6+550) EEE 5(5150) Perfectly Compatible) e6 (6134. 6198) E7, perfectly matched and easy to install. Easy to Clean and Replace: Clean and replace the brush rolls regularly to improve suction power and Increase performance and extend the life of your robot. The innovative brushes reach deep into corners and edges to remove more dirt, dust, and debris. They are easy to remove and replace as part of routine maintenance. Excellent Performance: The roller brush is made of high-quality rubber, and the rubber bearing is designed to grip and loosen dirt on any floor type. The brush replacements reach deeper into corners and edges to remove more dirt, dust, and debris. Contents: Our maintenance kit contains everything you need, including filters, side brushes, main brushes, and cleaning brushes. 1 set of roller brushes, 4