This Whole Kit,idea for repair or replace the damaged or old parts to renew your MI Robot Vacuum Cleaner. HEPA Filter: Recommend to replace 3-6 months. Effective HEPA Filter for robotic vacuum cleanerUnique design, easy to clean the dust boxdurable in use. Side Brush: Practical side brushes for robotic vacuum cleaner. Nylon brush, it not scratch the floor and furnitureUnique design, easy to collect the hair ABS material, in use. Roller Brush: Recommend to replace 6-12 months. Practical rolling brush for robotic vacuum cleanerFloating structure, deep cleaning. Material: plastic colour: As shown Package Contents: 1 x Roller brush 4 x Side brush 4 x Filter 2 x Cleaning tool Only the above package content, other products are not included. Note: Light 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.