PERFECT COMPATIBILITY: The spare part set is compatible with for iRobot Roomba i6(6550) i6+ i3(i3152) i3+(i3552) i4 i4+(4552) i7(i7156) i7+(i7556) i8 i8+(8550) j7 j7+ (7550) Plus E5 (e5154), E6 (e6192) vacuum cleaner, including multi-surface roller brushes, high efficiency Hepa filters and edge sweeping side brushes for regular maintenance of your Roomba E series robot and I HIGH PERFORMANCE REPLACEMENT PARTS: Dual Multi-Surface Rubber Brush Extractors feature a durable rubber tread that picks up and removes dirt and debris from any type of floor. Edge Sweeping Side Brush Replacement for Robots for iRobot Roomba reaches deep into corners and edges. High efficiency filters can maintain your robot's cleaning performance EASY TO CLEAN AND REPLACE: Hand wash in warm water and air dry completely before reuse. Clean spare parts regularly to improve suction power and extend the life of your vacuum cleaner. Edge sweeping brushes and filters should be replaced every 2-3 months for best results. Multi-Surface Rubber Brushes should be replaced every 6 months