Bosch 1-1/2 In. Diamond Hole Saw fast and easy starts, even when working with the hardest materials such as porcelain and granite. This hole saw features the Quick Change™ universal system, allowing you to switch to any size or type of hole saw in just seconds, enhancing efficiency and convenience on the job. It is designed for use exclusively with machines intended for wet sawing and must be operated on a GFCI-protected circuit to ensure safety and optimal performance. Model Number: