Set of 10 pcs Drilax Diamond Coated Drill Bit Size 1/2 inch in Glass, Marble, Granite, Ceramic Porcelain Tiles, Bottles, Fish Tanks, Stones, Rocks, Gems DIY Kitchen, Bathroom Renovation Drilling - Bul

\n Set of 10 - Bulk Package \n Diamond Drill Bit OD - 1/2 inch \n High quality DIY standard diamond drill bit (hole saw). Diamond coated tip goes through Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain, Bottles and Stones \n Can be used with Handheld or Upright Drills \n The diamond particle 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. \n Electroplated diamond coating will wear off if the tool gets too hot. Never let your drill bit run dry. \n Shank size is 3/8 inch - suitable for standard drills. Maximum depth of cut is 1 inch \n Here is how you could use water to keep the tool cool: a- You can build a mini water dam around the hole with plumbers putty. b- You can choose to spray water on the drill bit. c- Or you can use running water to cool the drill bit. EASY TO USE Center pilot drill bits are for wood, metal, etc.; Here is how you can keep the drill bit on target: a- You can make your own guide out of plywood - plastic or even a card board. All you need is to keep the drill bit in place until it makes the initial marks. b- You can start drilling at an angle, with the edge of the drill bit making a C slot and then getting the drill bit up to vertical. c- You can manually guide the drill bit with wet sponge. \n\n\n \n

Set of 10 pcs Drilax Diamond Coated Drill Bit Size 1/2 inch in Glass, Marble, Granite, Ceramic Porcelain Tiles, Bottles, Fish Tanks, Stones, Rocks, Gems DIY Kitchen, Bathroom Renovation Drilling - Bul