ITEM NAME:6x Diamond Holesaw 6mm Tile Ceramic Glass Slate Porcelain Marble Drill Bits Tool Store Categories Store Categories Other Product Description Features: --100% Brand New and High Quality. --Ideal for drilling ceramic tiles, glass, marble, slate and porcelain tiles up to hardness grade 5. --Diamond hole saw tile ceramic glass porcelain marble drill. --Need Cooling and lubrication,always use lubrication (water) , otherwise the diamond core will over heat. Use method: 1.Clamped firmly to a bench to allow for slow controlled drilling. 2.Make a template from a piece of timber or waste material, locate this over the area where you want to drill your hole and use it as a "guide" to start the hole. 3.Once you've got into the surface by 1mm to 2mm you can remove the guide and continue to drill in a controlled manner. 4.Start your hole diagonally, make a round trace and then hold drill straight. Specifications: Size: 50mm/1.97"(length) x 6mm/0.24"(hole size) Material: steel Packaged included: 6 x Diamond Hole Saw (6mm).Ideal for drilling ceramic tiles, glass, marble, slate and porcelain tiles up to hardness grade 5. --Diamond hole saw tile ceramic glass porcelain marble drill. 6 x Diamond Hole Saw (6mm). Start your hole diagonally, make a round trace and then hold drill straight.