Size: 20*16*6cm Product model: i7 i7 + E5 E6 series Package contents: 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 filters, 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 filters can block dirt, pet dander and other particles as small as micrometers. 4. Easy to replace: To ensure your robot vacuum cleaner works with the best performance, it is recommended to replace the versatile brush roller every three months, the filter every month and the side brush every two months, depending on how often you use it.