STANDARD 3/8 inch Shank Use with and standard electric or cordless drill.
PROFESSIONAL Quality Tool for Drilling True 6 Inch Holes in Plaster Ceilings Walls, Tiles, Glass, Marble, Granite, Quartz, Ceramic, Porcelain
TRUE 6 Inch - Hard to Find Diamond Tool for DIY Kitchen, Bathroom, Shower, Ceiling Light Installation Projects
Use water for quartz, tile, marble type of material to prolong the tool life, these tools do not need a center pilot drill. DRILAX Quality - We are here to help.
Does not have a center pilot drill. You can make a guide out of a piece of 10 x 10 plywood.