This carbide-tipped hole saw from Morse® features carbide tooth tips with high wear resistance for fast holes and longer life for cutting abrasive materials. Special tooth design ensures very fast hole saw cutting. Ground and set teeth help to cut materials that bimetal saws will not cut. 3 teeth per inch creates a wider gullet for better chip clearance and faster cutting. For use with fiberglass, particle board, asbestos board, plaster, and Formica®. Separate arbor required.