Made of wonderful material, and life like to use. Filter can clear out particulate subject reminiscent of dust and impurities, and achieve the affect of excessive performance and cleanliness. Main brush and the element brush provide help to efficiently eliminate filth and mud from corners As part of regular maintenance, it may be smoothly disassembled and replaced. It is warmly commended to switch spare substances every single two to 3 months to preserve the sweeping robotic at its supreme functionality These alternative parts fit for N9+ Robotic Vacuum Cleaner size:164 x 25MM Material:plastic colour:White+black Package Contents: 1 x Main Brush 3 x Side Brush four x Mop 4 x Filter Only the above equipment content, varied item are not included. Note: Light and various exhibits could cause the color of the article in the picture somewhat various from the real thing. The measurement allowed error is +/- 1-3cm.