This listing is for individual small diamond drill bits (diamond hole saws), you can select the size(s) you need. Shank size is 3/8" or less. Drilax tools will fit standard hand drills and press drill..
Drilax Diamond Drill Bit - Hole Saw Set of 10 Pieces All Popular Sizes from 1/4" to 2" Inch for Wet Cutting Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain, Bottles, Quartz Sinks, Lot 10..
The diamond particule coating on DRILAX hole saws give superior performance and lifetime. Please note our tools do not need center pilot holes. Center pilot hole drills are mostly for wood, metal, etc..