General description Replacement Parts Main Brush Dust Bag compatible with iRobot Roomba i3, i7, E5, and E6 robotic vacuum accessories. Made of high-strength and environmentally friendly materials, these parts are designed for easy installation and optimal performance. Technical specifications Material: Plastic Package Contents: 2 rolls, 6 dust bags, 1 cleaning brush Allowed measurement error: +/- 1-3 cm Usage It is recommended to replace the main brush and dust bags every 1-2 months for best results. Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.