Cutting & Polishing Kit for Granite / Concrete Countertop Undermount Sink Work 1 Piece of 2" (Metal-Filled, 1 5/8" Height) Diamond Grinding/Polishing Drum Wheel. 1 Piece of 4" Diamond Super Thick Segement Turbo Row Grinding Cup Wheel. 1 Piece of 5" Diamond Convex Blade for circle shape cutting. 7 Piece of 2" Diamond Polishing Drum for sink basin hole polishing. http://www.amazon.com/dp/B073XMN285