Review on 🧹 High-Quality Replacement Roller Brushes for iRobot Roomba i6+, i7, i7+, i3, E5, E6, E7 - Replenishment Kit (2 Set) by Jennifer Brown

I bought the i7 in January 2020 and received these casters as spares around May 1st. The roles are functionally identical to the OEM. Size and diameter are the same. The shape and depth of the crests are identical. The rubber plastic these things are made of looks a little different (a very slightly rough finish, not unlike 400 grit sandpaper), but behaves exactly like the originals. So they basically behave the same, sound the same, look the same and are less expensive. Happy with the purchase so surprised by some of the negative comments here. If all the videos sent match mine, you will be happy with it.