HTS 111C0 5Pc Diamond Cutting Wheel Set with Bonus 1/8" Shank Mandrel Cutting wheels are coated with industrial diamonds Wheel diameter 7/8" / 22.25mm; wheel thickness .023" / .59mm Great for cutting, sawing, carving, sharpening and filing Works on hardened materials including marble concrete, brick, porcelain, ceramics, epoxy, and more Set includes 5 cutting wheels, 1/8" shank mandrel, and a plastic storage case