Don't waste your time and money on this. I have just started using this replacement kit on my Roomba, everything is new in this pack. My robot is so noisy when walking now! Louder than my normal vacuum cleaner. Sacks were not properly placed in the self-cleaning charging station. You have to place them in the exact spot (which is tricky) for the lid to close so it knows the bag is in place for the cleaner to empty. My vacuum also kept stopping due to a "Remove All Debris" error on initial installation. I had to restart my vacuum twice for this to stop. All in all it was such a headache to get it working and now that it works for me it's very loud. I bought this set 2 months ago and now that I've run out of everything and am using it my return window is closed. Wasted money and too much wasted time on my vacuum cleaner which should save me time! Just buy a replacement from Roomba and save yourself the hassle. FYI, this is my first bad review and I've been buying Revain for 12 years now.