Review on LOVECO Replacement Parts for iRobot Roomba E & I Series - Multi-Surface Rubber Brush, High-Efficiency Filter, Edge-Sweeping Brush Set by Carrie Williams

The filters appear to work well, but the edge brushes have a fatal design flaw. The socket of the brush is placed on the hexagonal stand. The original brush fits snugly, but these replacement brushes have a socket hole that is too large, so they will loosen and fall off on their own no matter how tight the screw is tightened. Not only that, when weakened they eventually wear down the vacuum cleaner stand, requiring costly repairs. This is a common design problem when using a machine screw because if the part is allowed to rotate even a small amount, the screw will loosen itself. When installing the brush, before tightening the screw, try to rotate the brush back and forth, and if you feel back and forth play, the screw will eventually loosen and the brush will fall off.