It is easy to remove and replace as part of routine maintenance. It effectively removes dirt, dust, and debris from corners and edges, including human and pet hair. For best performance, replacement every 1 to 3 months is recommended. Compatible with Gutrend style 220, iLife A4, A4S, A40, Polaris PVCR 0726W, 0826, 0926W EVO, 0930 SmartGo, Amibot Spirit H2O Smart Robot, and other similar robot vacuums. Color: as shown. Material: plastic. Package includes: 1 roller brush, 1 roller cover, 1 primary filter screen, 6 side brushes, and 4 filters. Only the items listed are included; other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.