19mm Diamond Hole Saw 3/4 Inch for Porcelain Tile, Glass & Ceramic - Diamond Core Drill Bit with Guide to Prevent Skidding, Precise Hole Cutter for Marble, Granite, Stone, Mosaic and Ceramic Drilling

19mm 3/4" Diamond Hole Saw 19mm Professional Quality Diamond Drill Bit Bigger Diamond Grit Pieces Cut Better Keep Cool. Fits Regular Drill Chuck : Please Note This Type Of Diamond Core Drill Bit Must Be Dipped In Water Every 10-20 Seconds To Keep Cool - If You Do Not Dip The Diamond Core Bit You Will Not Get Dozens Of Holes You Will Only Get 1 Hole DIAMOND DRILL CORE GUIDE INC. Just Tape Hold In Place No More Fingers Crossed It Doesnt Move Or Jump DIAMOND HOLE SAW BITS Cut Porcelain Granite Countertops Ceramic Glass Tile Blocks And Wine Bottles DIAMOND CORE BITS FIT ANY STANDARD DRILL CHUCK Using Hammer Drill Or Not Keeping Cool Will Wear Fast TRADE SECRET Remove From Hole Every 15 Secs Dip In Water Get Water In Hole Will Stop Material Crack