42-piece set: Each set contains 1 main brush, 3 side brushes, and 3 HEPA filters for easy replacement.Compatible models: suitable for roborock S4 E4 S5 S6 S5MaxFeatures: Reduce harmful substances in the air and extend the service life of the vacuum cleaner.Replacement suggestion: It is recommended to replace the main brush every 3 months, and it is recommended to replace the side brush and filter every 1-2 months.Colour: black+white+orangeMaterial: plasticPackage Contents:6 x Main brush18 x side brush18 x filterOnly 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.