3 Extra pairs of Carbon Brush included in this package. Carbon brush is consumable parts of all types of polisher. They need to be replaced when they are exhausted, otherwise, polisher stop working. This polisher is REAL 1000 Watt. Recently some seller announce their polisher 1400 Watt, but actually they are 700-800 Watt. This package carries (a)-(e): (a) 1 Piece of (110V, 1000 Watt, side handle, D Handle, water feed system, 1000-4500 RPM. we attached 3 extra pairs of carbon brush in this package. Carbon brush is consumable parts of all types of polisher, they need to be replaced when they are exhausted, otherwise polisher stop working). (b) 8 Pieces of 5" Wet Diamond Polishing Pad for concrete granite marble: 1 X Grit 50 100 200 400 800 1500 3000 6000. (c) 5 Pieces of 5" 5 STEP Dry Diamond Polishing Pad for concrete granite marble: 1 X Step 1, Step 2, Step 3, Step 4, Step 5. (d) 1 Piece of 5" / 5 Inch Diamond cutting blade for stone concrete. (e) 1 Piece of 5" aluminum, 1 Piece of 5" PVC, and 1 Piece of 5" Rubber Backer/Pad Holder.