Description of Diamond Marble Granite Ceramic Bottles
【High Quality Drill Hole Saw】Construction of high quality High-speed industrial grade carbon 45# steel for rust proof, not like other cheaper hole saw kit just use iron, much more durable and can offer a up to 50% longer life; great heat resistance. 【DURABLE AND SAFETY】Nickel-plated with a diamond dust coating offers superior performance and cutting strength.Extended service life.This diamond drill bits are high quality and good performance that excellent for making clean and accurate hole. 【Size】 Every hole saw use laser print size on it, can use easy. Size of these 15pcs hole saw: 6mm/0.24",8mm/0.31",10mm/0.39",12mm/0.47",14mm/0.55", 16mm/0.63", 18mm/0.71", 20mm/0.79", 22mm/0.87", 25mm/0.98", 26mm/1.02", 28mm/1.10", 30mm/1.81", 40mm/1.57", 50mm/1.97". 【WIDE APPLICATION】 Versatile cutter that can be used in a wide variety of applications; Ideal for Drill Glass,Wood,Tile Bottles,Blocks Jars, Ceramic,Slate Mable, Granite Light Stone, and other hard surfaces. 【TIP】Please keep adding water when the diamond drill bits are working on the glass or ceramics.low drill pressure and increased use of water lubrication can extend drill bit life. Warnings: Not for use on Concrete or for depths beyond about 1/2";.