Lenox Tools 121096DGDS Diamond Grit Hole Saw D/S-6DG, 3/8-Inch or 9.5mm Each LENOX hole saw has a continuous, brazed edge that lasts longer in tile and stone The diamond-tip hole saw uses a low-torque design that requires little pressure for fast cutting An over-sized slot in the LENOX Diamond hole saw allows for easy plug removal 3/8-inch diameter 90-day limited warranty