Made of wonderful material, extra . As a part of typical maintenance, it can be smoothly removed and adjusted It is usually recommended that you just update spare substances each 3-6 months looking on the frequency of use to preserve the machine working at its supreme functionality Side brush can cross deep into the corners and edges to remove more dirt, dust and debris For Bot W10 Vacuum Cleaner Accessories Material:plastic colour:Photo Color Package Contents: 1 * Side Brush