3 extra pairs of carbon brush included. Carbon brush is consumable parts of all types of polisher. They need to be replaced when they are exhausted. Otherwise polisher stop working. This package carries (a)-(f). Polisher color is Random: Red+Black or Blue. (b) 27 Pieces of 4 (4 Inch / 100 mm) Diamond Wet use Polishing Pad. 7 X Grit 50. 6 X Grit 100. 5 X Grit 200. 3 X Grit 400. 2 X Grit 800 15 00 3000. (c) 1 Piece of 4 Diamond Glaze Buffer (it brings mirror like polished result to natural granite marble). (d) 1 Piece of 4 Diamond Turbo Grinding cup wheel for stone concrete sandstone travtertine surface grinding. (e) 1 X 4 (4 Inch) aluminum Velcro backer/Pad Holder. (f) 1 Piece of the 4″ to 5″ Dust Shroud. Emovable front edge of shroud make it possible to grind close to wall or edge.