Often replace the filter to help make indoor air more freshSide Brush:it will not scratch the floor and furnitureUnique design, easy to collect the hair material, durable in use.Filter helps reduce household odorsClean brushes keep your home robot operating at peak performance. 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 breathe.For best results, filters should be replaced every 2 - 3 months.Compatible with model: For Xiaomi Dreame Bot L10 ProMaterial:plasticcolour:As shownPackage Contents:1 * main brush2 * side brush2 * filter screen2 * black 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.