RemGrit 2-1/2" Hole Saw can be used to cut ceramic tile, marble, slate, fiberglass, laminates, and composites. It features a patented design that eliminates the need for a separate mandrel or pilot drill, and its tungsten carbide grit cutting edge produces exceptionally smooth cuts. The continuous edge design ensures that there are no teeth to dull or chip, and the 1" depth of cut is perfect for do-it-yourself ceramic tile projects.