3 Pcs SET Diamond Hole Saw Drill Bit Set Granite Glass Tile - Tools 3 Piece Diamond Dust Hole SAW Drill BIT for Ceramic Tile Marble Rock Porcelain - 1/2" -3/4" - 1" Inch In PERFECT DIAMOND HOLE SAW DRILL BIT TOOL SET - 3 Common Sizes: 1/2 inch 3/4 inch and 1 inch. Packed in air tight PVC wrap. STANDARD 3/8 inch Shank for STANDARD electric or rechargeable drills, handheld or upright. FOR ALL DIY PROJECTS: Drilling Holes in Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain, Bottles, Quartz Sinks. Installing Faucets, Showers, Pipes for Renovating Kitchen, Bathroom, Shower, etc. BUY AS A SET AND SAVE OVER 80 Percent, compared to big box store. Our customers love these high quality diamond tools. WE ARE HERE TO HELP WITH YOUR PROJECTS. There is no need for a center pilot drill. These tools do not have center pilot drills. Do NOT run dry. These Diamond Coated Tools will work best if you use water to keep the tools cool.