Size: 20*16*6cm Product model: i7 i7 + E5 E6 series Package content: 2*main brush, 5*filter, 8*side brush, 1*screwdriver, 1*small brush, 1*universal 1.Compatibility: The accessory kit is compatible with iRobot Roomba i7 i7 + E5 E6 series, these spare parts are suitable for your vacuum cleaner. 2. What's in the box: 2 main brushes, 5 filter screens, 8 side brushes, 1 screwdriver, 1 small brush, 1 universal. 3.High performance: Two high-quality rubber brushes are perfectly matched, one for removing dirt and the other for cleaning dirt. The side brush goes deep into corners and edges to remove more dirt and debris. Replacing the filter can block dirt, pet dander and other particles as small as micrometers. 4. Easy to replace: To ensure that your robot vacuum cleaner works at its best, it is recommended to replace the multi-sided brush roller every three months, the filter every 1 month and the side brush every half month, depending on your frequency of use.