This set works as great as the , precision fit and easy install. The products are made of high-strength and environmentally friendly materials to optimal performance and a healthier lifestyle. friendly materials to optimal performance and a healthier lifestyle. This is a good helper to keep your house truly clean and improve the air quality of your family. Clean by hand washing in warm water and let it completely air dry before reusing them. Regularly clean replacements parts to improve suction and performance and extends the life of your robot vacuum. For best results, edge-sweeping brushes and filters should be replaced every 2-3 months.Multi- brushes should be replaced every 6 months. Colour:Photo Color Material:plastic Package Contents: 2 * roller brush 3 * filter 4 * side brush Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement