Bosch premium carbide teeth mean greater speed, time savings and a better result on the job. Fast, clean holes in multiple materials: wood, drywall, tile, brick, block, cement block and aluminum. Up to 10x greater speed, longer life than Bi-Metal hole saw. Cup is 50 percent deeper than standard hole saw to accommodate more applications. Multipurpose pilot bit optimized to material so the right bit always fits the right application.