Compatibility - The roller brushes for iRobot Roomba s9 (9150) s9+ s9 Plus (9550) s Series vacuum cleanerHigh quality rubber roller brush - Environmentally friendly material, resistant, delicate and soft, effectively helps the robot vacuum cleaner to clean the floorEasy to Replace - Snap into place for quick and effortless routine replacement. No tools required, easy to replace the main brushColor: greenmaterial: plasticKeep your vacuum operating at peak performanceMore environmentally friendly material, resistant, delicate and soft, effectively clean the floor and remove more dirt, dust and debris.Maintenance:To keep peak performance, replacement roller brush should be replaced every 2~3 months, depending on your use frequency.Package Content:2 pairs of main 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.