1. A clean brush can keep the home robot at its best performance.2. As part of daily maintenance, the side brush is easy to disassemble and replace.3. Replace the filter applicable to iRobot Roomba i7 i7 + i6 i8 i3 Plus E5 E6 E7 3150 E&I series.4. The filter maintains cleaning performance by reducing the penetration of dust, pollen and other allergens into the air you breathe.5. For best results, spare parts should be replaced every 1-3 months.Material ABScolour green + WhitePackage Contents 1 pair x roller brushes4 x side brushes4 x filters1 x screwdriver1 x cleaning brushOnly the above package content, other products are not included.Note Light shooting 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.