MZY LLC 2 Sets Tangle-Free Debris Extractor Set For iRobot Roomba 800 and 900 Series 805 860 870 871 880 890 960 980 Vacuum Cleaner Accessories Replacement Parts MODEL: Compatible with iRobot Roomba 800 and 900 Series 805 860 870 871 880 890 960 980 PACKAGE: 2 Sets Tangle-Free Debris Extractor ADVANTAGE: High effeciency to reduce dust, pollen and other allergens. And remove dust and pet hair easily SUGGESTION: Roomba vacuum parts should be replaced every 2 - 3 months to keep your Roomba operating at peak performance 100% MONEY-BACK GUARANTEE: MZY LLC are backed by 100% guarantee that you are fully satisfied with your product or get your money back.