Drilax 3-1/2 Inch Diamond Hole Saw Glass Drill Bit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Diamond Coated Drilling Holesaw Tool 3 1/2" - Larger Than 3 inches - Smaller Than 4 Inches</li><li>Cuts Through Ceramic and Porcelain Tile - Glass， Marble， Granite</li><li>Use with Any Electric Drill - Diamond Circular Hole Saw for Floor Drain， Shower， Shower Mixing Valve， Shower Drain Installation</li><li>Drills 1 inch deep - Wet Type - Do not use dry - No Pilot Drill Bit - Pilots are not required</li><li>Cylindrical Shank 3/8" - No Need for Adapters or Arbor</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41u9G2EtsAL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/415ef42KZWL.jpg" noproxy>