Bosch 1-1/4 In. Diamond Hole Saw fast and easy starts, even when working with the hardest materials such as porcelain and granite. Its Quick Change™ universal hole saw system allows you to switch to any size or type of hole saw in seconds, making your work more efficient and versatile. This tool 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: