Compatible with silvercrest SSR1 SSRA1 ILIFE A7 A9s robotic vacuum cleaner.Side brush reaches deep into corners and edges to remove more dirt, dust and debris.Filters maintain Vacuum's cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you breathe.Maintenance: To maintain your home robot operate at a peak performance and reduce battery drain, filters,Side brushes should be replaced every 2-3 months.Colour:As shownMaterial:plasticSize: 14.3cmPackage Contents:8 x Side Brushes6 x FiltersOnly 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.