Set Includes: 3 x Dust Cut Filters, 1 x Rotary Brush Set, Side Brush, Screws Included, 3 x Driver Included, Compatible Models: iRobot Roomba iRobot Roomba Vacuum Cleaner e5 / i7 / i7+ / i3 / i3+. 【Roller Brush】 Rubber dual action brush adheres perfectly to all floors, including hardwood and carpet, strong cleaning power can absorb all kinds of dirt, dust, dirt, hair and more easily to clean your floor. The rubber material of the roller brush is polished, so it may be a sound at the beginning of use. Please be aware that if there is a noise, it can be recovered if you operate it for a certain time. 【Replacement Powder Cutter Filter】 Replacement Part Number: 4651374 Filter uses a special material that captures 99% of allergens such as dust, pollen and dust mites. If the debris pops up on the surface or the suction force weakens, replace it immediately to maintain the cleaning performance of your vacuum. 【EDGE CLEANING BRUSH】 Replacement Part Number: 4650964 Edge Cleaning Brush is designed to rotate forward at a unique angle to easily remove hard to reach debris on walls or corners of room. 【How to Replace】Unscrew the screw on the edge cleaning brush, push the new edge cleaning brush into and tighten with the included screws. Regularly replace brushes will restore dust removal capabilities. Due to improper transportation, the hair of the cleaning brush may be slightly curved. To trim the bristles, soak the brush in warm water for 3 minutes, remove and wait to dry. [Replacement Estimation] Replace the brush when worn or damaged. Depending on the usage conditions, the estimation of replacement may vary. It is recommended that you change the roller brush every 2-3 months in normal use. For edge cleaning brushes, it is recommended to replace every 1-2 months. For filters, you need to replace it when the suction is weak or dirty is heavy.