Replace your old or damaged parts.side brushes keep your home robot running at peak performance.The side brushes are easy to remove and replace as part of routine maintenance.side brushes maintain cleaning performance while reducing the infiltration of dust, pollen and other allergens into the air you breathe.For best results,side brushes should be replaced every 1-2 moonCompatible: for Liectroux C30BMaterial:plasticcolour:yellowPackage Contents:6 * side brushesOnly 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.