Bosch 3-1/16 In. Diamond Hole Saw delivers fast and easy starts, even when cutting through the hardest materials like 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 hole saw 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: