Diamond Hole Saw with Pilot Drill Bit for Ceramic, Porcelain, Tile Hole Saw, Quartz, Marble, Granite Hole Saw, Diamond Drill Bit with Locator Pin (4 inch)
Clean, Precise, Fast, and Dustless Cuts Every Time Standard 3/8" Shank for Standard Drills - No Special Tools Needed
The Pilot Drill Bit is an Initial Locator. It should be removed after making a 1/8 inch marker ring. This ring will be enough to keep the diamond hole saw in position without the pilot bit.