Bosch 7/8 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, enabling you to switch to any size or type of hole saw in seconds, making your work more efficient and versatile. It is designed for use only with machines intended for wet sawing and must be operated on a GFCI-protected circuit to ensure safety and optimal performance. Model Number: