EcoMaid Accessories Tangle-Free Debris Extractor Set & HEPA Filter & Side Brush For Roomba 800 900 Series 870 880 980 Replenishment Kit Contains eveything you need to help maintain your robot's cleaning performance in one convenient kit Kit includes 3 HEPA Filters, 2 Side Spinning Brushes, and 1 set of replacement AeroForce Extractors Compatible with Roomba 870 and Roomba 880