We have attached 3 extra pairs of carbon brush in this package. Carbon brush is consumable parts of all types of polisher or grinder. They need to be replaced when they are exhausted. Otherwise polisher stop working. Year 2021 New Version Polisher color is Red+Black (not blue). 44 Pieces of 4 (4 Inch / 100mm) Diamond Polishing Pad. 8 X Grit 50 100 200 400. 4 X Grit 800 1500 3000. And 1 Piece of 4 Diamond Glaze Buffer. (it brings mirror like polished result to granite marble and natural stone). And 1 X 4 (4 Inch) Aluminum Velcro backer/Pad Holder. And 1 Piece of 4 Inch Diamond Turbo Row Grinding cup wheel working layer (use with aluminum pad holder) for stone concrete surface coarse grinding.