I clean Vacuum Cleaner 6-arms Side Brushes6 Packs for iRobot Roomba 770, 780, 790, 650, 595, 630 Compatible with for iRobot Roomba 500,600,700 series. eg;roomba 770, roomba 780, roomba 650, roomba 790, roomba 595, roomba 630. TKeep your iRobot Roomba operating at peak performance.The replacement roomba vacuum parts should be replaced every 2 - 3 months. These side brushes are easy to remove and replace as part of routine maintenance. To make your home more cleaner,more comfortable. **How to replace it**:1.Loosen the side brush with a coin or small screwdriver. 2.Remove the side brush, clean the side brush and the brush post, and reinstall the side brush. What do you get: 6Packs* replacement brushes for iRobot Roomba, and some screws.