1. Side brushes are easy to remove and replace as part of routine maintenance.It is made of high-strength and environment-friendly material, in use. 2. Main brushkeeps your home robot operating at . 3. The Filter is washable. It maintain robot's cleaning performance while reducing infiltration of dust, pollen and other into the air you breathe. 4. For best results, spare parts should be replaced every 2 - 3 months. 5. Compatible with Models:All Sets for S7 T7 T7S Plus Vacuum Cleaner. Material:plastic colour:As shown Package Contents: 1 x main brush 5 x side brush 4 x hepa filter 5 x mop cloth 2 x Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.