Compatible with i7, i7+, i3, i3+, i4, i6, i6+, i8, i8+/Plus, E5, E6, E7 Robot Vacuum Cleaner. This set works as well as the original parts, offering a precision fit and easy installation. Valuable package includes 4 dual multi-surface rubber brush rollers. Made from high-strength and environmentally friendly materials for optimal performance and improved air quality. Features highly efficient filtering technology with unique dual multi-surface rubber brushes that resist tangling with pet hair. Brushes adjust and flex to maintain constant contact with carpets and hard floors. Easy to clean and replace. Regular maintenance helps improve suction, performance, and extends the life of your robot vacuum. Color: green. Material: plastic and sponge. Size: approximately 185mm in length. Package contents: 4 x replacement roller brushes. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3cm.