The Roomba® s Series replenishment kit comes complete with everything you need to maintain your robot’s cleaning performance in one convenient pack. Includes: 3 filters, 3 Corner Brushes, and 1 Set of Multi-Surface Rubber Brushes.  The High-Efficiency Filter captures and traps 99% of dog and cat dander allergens. The Corner Brush is specially designed at a 26° angle, using five 30mm brushes to clean deep into corners and along wall edges. The wide Dual Rubber Brushes clean large areas efficiently and work together to help get floors thoroughly clean. One brush loosens and agitates dirt, and the other moves in the opposite direction to extract and pull it in. Compatible with Roomba® s Series Robot Vacuums only.