Drilax 5-1/2 Diamond Coated Hole Saw Ceramic Porcelain Tiles Glass Granite Flooring Tile Drill Bit 5 1/2 Inches in Diamond Coated Hole Saw Drilling Holesaw Tool 5 1/2" - Larger Than 5 Inches EASILY Cuts Through Ceramic and Porcelain Tile - Glass, Marble, Granite, Quartz - USE WATER TO COOL Use with Any Electric Drill - Diamond Circular Hole Saw for Floor Drain, Shower, Shower Mixing Valve, Shower Drain Installation Drills 1 inch deep - Wet Type - Do not use dry - No Pilot Drill Bit - Pilots are not required Cylindrical Shank 3/8" - No Need for Adapters or Arbor