The Replacement Parts are Compatible with iRobot Roomba e, i, & j Series E5, E6, i1, i1+, i3, i3+, i4, i4+, i6, i6+, i7, i7+, i8, i8+, j7, j7+ Plus Robot Vacuums and Combo j7+ Self-Emptying Robot Vacuum & Mop. The Side Brush helps you get deep into corners and right up against walls and base boards to ensure superior cleaning area. Easy to Replace: Brand , durable and practical to use. As part of normal maintenance, it can be easily disassembled and replaced Please maintain the side brush once per week( twice per week in homes with pets) and replace it every 3-4 months. The side brush reaches deep into corners and edges to remove more dirt, dust and debris. The cleaning filter blocks 99.97% of pollen, dirt, dust, pet dander and other particles as small as 0.3 Micrometres in size. The actual mop may have slight differences or color differences, which does not affect use. Colour:black+green Material:plastic Package Contents: 12 x Side Brushes 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.