ITEM NAME:Replacement Parts for Eufy Robovac 11S, Robovac 30, Robovac 30C, Robovac 15 I4L5 Replacement Parts for Eufy Robovac 11S, Robovac 30, Robovac 30C, Robovac 15 I4L5 Tips and skills: 1.Please clean the filter frequently, and replace the brush, filter every 2-3 months(depending on using frequency) to keep your vacuum cleaner working in high-performance. 2.If the side brushes is bent due to.1 screwdriver. 1 main brush. 8 side brush. size:Side brushing: 5.2cm. colour:Photo Color. Replace brush guard and push to snap into place. Properly align end tabs of new rolling brush with slots to install.