The side brush allows your vacuum cleaner to reach deeper into the carpet for a more thorough cleaning. The filter filters fine dust to reduce dust, pollen and other allergens from penetrating the air you breathe. Uniquely designed brushes with rubber treads to adapt to different floor surfaces, removing everything from small dust to large deposits. As part of normal maintenance, it can be easily removed and replaced. It is best to replace spare parts every 2 to 3 months to keep the machine running optimally. Material: plastic Color: As shown Package contents: 1 pair x roller brush 4 x side brush 4 x hepa filter 4 x mop cloth 1 x cleaning brush 1 x screwdriver Only 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 allowed measurement error is +/- 1-3 cm.