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. 1 Piece of 4″ to 5″ (110V, 1000 Watt, 3 Extra carbon brush, Side handle, D Handle, 5/8-11 thread) New Version Wet Variable Speed Polisher. Many other sellers DO NOT attach the lock ring. 24 Pieces of 4 (4 Inch) Diamond Polishing Pad. 6 X Grit 50. 4 X Grit 100 200 400. 2 X Grit 800 1500 3000. And, 2 Pieces of 4″ (5/8″-11 Thread arbor) Diamond Super Wide Segment Turbo Row Grinding Cup Wheel for concrete stone. And 1 Piece of 4 Professional Grade Glaze Buffing Pad. (it brings natural stone granite marble mirror like polished). And 1 X 4 (4 Inch) Rubber backer/Pad Holder.