DiamondSure Wet Porcelain Tile Drill Bits DiamondSure bonded diamond core drill bits cut through materials where other bits fail. They provide optimum drilling efficiency in extremely hard, unforgiving stone, tile, and glass materials. Features Wet diamond drill bits for hard porcelain and glass tile Use with an adjustable hole saw guide Shaft size is 3/8" for use in standard drills Maximum drilling depth is 1/2" Recommended for ceramic tile, porcelain tile, glass block, slate, marble, quartz, granite, and limestone Not designed for use on concrete, masonry, metal, or use with impact hammer drills The life of any type of diamond drill bit depends upon the hardness, abrasiveness, and thickness of the material being drilled and the specific drilling techniques used In some very hard stones and tiles, it may take 2 to 3 minutes to drill only 1/4" deep
