The side brush screw hole is incorrect and cannot be used with Roomba 694 series robots. Not sure if the hole or screw is different on other models but doesn't work on my 694. Other parts were easy to install and the cleaning tool The brushes are great (should come with all Roombas as part of the purchase) . There will be a higher estimate for installation and lower cost, but the side brush is 1/3 of the parts you buy. So if it doesn't fit/work, it's hard to tell if it's easy to install or worth it. I'll see if I can use a drill to make the parts work with the screw.
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