Remind: This polisher is 110V, NOT 220/240V. 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. Many other sellers DO NOT attach the lock ring. 1 Piece of 1 3/8 (35 MM) Diamond core bit / Hole Saw for stone concrete hole cutting. 37 Pieces of 4 (4 Inch) Diamond Polishing Pad. 7 X Grit 50 100 200 400. 3 X Grit 800 1500 3000. And, 1 Piece of 4 / 100 mm Diamond Utra Wide Segment Turbo Row Grinding Cup Wheel for concrete stone. And 2 Pieces of 4 Professional Grade Glaze Buffing Pad (they bring natural stone granite marble mirror like polished result). And 1 X 4 (4 Inch) aluminum backer/Pad Holder.