[Compatibilty]These replacement parts accessories are specifically designed for iRobot Roomba Combo Essential Robot and Vac 2 Vacuum cleaners Q0520 [What's in the package] iRobot Roomba Combo Essential Robot and Vac 2 Vacuum cleaners Q0520 1 Main Brush Rollers, 4 Hepa Filters, 4 Side Brushes, 1 Brush Cleaning Tool 4 Dust Bags [How to maintenance]Itand is better to replace the replacement parts every 2-3 month to keep the Irobot Roomba Combo Essential Robot 2 at the best working condition Easy Installation]The user-friendly design of these Irobot Roomba Combo Essential Robot 2 vacuum accessories allows for quick and easy installation Model Number: for iRobot Roomba Combo Essential Vac 2 Q0520 Colour:As Shown Material:plastic Package Contents: 1 * Main Brush 4 * Hepa Filters 4 * Side Brushes 4 * Dust Bags 1 * Brush Cleaning Tool Only the above package content, other products are not included. Note: Light reflection 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.