Clean brushes keep your home robot operating at .Side brushes are easy to remove and replace as part of routine maintenance.Filters maintain cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you .For best results, filters should be replaced 2 - 3 months.Compatible Models:for E20, E30, E31Material: Plasticcolour: White+BluePackage Contents:6 x highly efficient filters6 x washable foam filters10 x heavy-duty side brushes1 x Main Rolling Brush1 x Cleanning Brush1 x Screw driverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.