More Holes. Less Time. The LENOX® Diamond Hole Saw is designed for drilling holes in Porcelain, Ceramic, Slate, Granite, Glass and many other tough and delicate surfaces. The bit features a brazed diamond edge that lasts longer in tile and stone. You get fast and easy cutting and it requires low torque and little pressure to get the job done. The hole saw also allows for easy plug removal. For best results, use LENOX® SNAP-BACK Arbors.