Matching Model - This replacement part is compatible with iRobot Roomba i7 i7 Plus i7+(7550) i8 Plus i8+(8550) i3 i3 Plus i3+(3550) i4 i4 Plus i4+(4552) i6 Plus i6+(6550) e5(5150) Perfectly compatible) E6(6134, 6198) E7 vacuum cleaner, perfect fit and easy to install. Excellent Performance: The roller brush for iRobot Roomba is made of high quality rubber with a rubber tread designed to grab and break up dirt from all types of floors. The replacement parts can reach deep into corners and edges to remove even more dirt, dust and debris. Easy to clean and maintain: Regularly clean and replace the roller brush to improve the suction power and performance and extend the life of your robot vacuum cleaner. Maintenance: Depending on the frequency of use, it is recommended to replace the roller brush every 2-3 months to maintain the excellent performance of the vacuum cleaner. 2 Pack Roller Brushes. (Note: When you first use the rollers, there may be some sounds, but if you use them for a