Compatibility This replacement parts kit Compatible with j7 j7+/Plus E5 E6 E7 i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 Robot Vacuum. This replacement parts work as same excellent performance as the original. Premium Quality Material High-Effiiciency Filters Edge-Sweeping Brushes Dual Multi-Surface Rubber Brushes are produced from high quality environmental protection materials.This is a good helper to keep your house truly clean and improve the air quality of your family. Tips For best results, edge-sweeping brushes and filters should be replaced every 1-3 months.Multi-surface rubber brushes should be replaced every 4-6 months. Color: green Material: rubber Package Contents: 3 pairs of roller brushes 8 x filters 8 x side brushes 1 x screwdriver 1 x cleaning brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.