PERFECT FIT - 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, with precision fit and easy installation. VALUABLE PACKAGE - Includes 4 sets of dual multi-surface rubber brush rollers. Made of high-strength and environmentally friendly materials for optimal performance and a healthier lifestyle. HIGHLY EFFICIENT FILTERING TECHNOLOGY - Unique dual multi-surface rubber brushes resist tangling with pet hair. Brushes adjust and flex to maintain constant contact with carpets and hard floors. EASY TO CLEAN AND REPLACE - Regular cleaning and replacement of the roller brush helps improve suction, performance, and extends the life of your robot vacuum. Color: green Material: plastic + sponge Size: Approximately 185mm in length Package Contents: 4 sets x replacement roller brushes. Only the listed items are included; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.