Blue 6PCS 9/16 inch Dry Diamond Drill Bits Set, 14mm Diamond Core Drill Bits for Tile Ceramic Marble Porcelain Stone Glass.

Larouoba 6 PCS 9/16 inch Diamond Drill bit , 14mm Diamond Drill Bite for hard porcelain tile, ceramics,bathroom tile,granite & marble, masonry, concrete, glass, hard plastic . 1)Cut Holes Like a Professional: The drill bit is made of cemented carbide and is manufactured by vacuum brazing diamond technology. There is special wax for lubrication in the central control tube. Wax inside the drill bit helpful for Cooling and Lubrication 2)Keep the lasting ：Wet and dry use, water can cool the drill bit and prolong the life of the drill bit. 3)Super Quality Raw Material: Using vacuum brazed technology ,which increases resistance to temperature and friction,to make the diamond particles better attach to the core steel, imporve the performance and lifetime.  Specification: Size: 9/16” (14mm) Quality:6pcs Lengthen :65mm Shank：Hex Shank Larouoba Diamond Drill Bit Includes： 6 pc 9/16 inch (14mm) diamond drill bit 1 x Storage case Steps To Drill Clean And Precise Holes： 1.Start Drilling the hole in an angle about 45 degrees to the surface, so the drill has the chance to start and will prevent the drill slipping. 2.Slowly move the drill bit into a more up-right position and wobble the drill bit in the circular motion. 3.Do not need to apply much pressure,let the drill bit do the work, you will feel the drill bit break through the back of the glass or tile once the hole is completed. 4.Take care when using them as a bit can glaze and burn out if use too fast.

• · 【Diamond Drill Bit Packaging Includes】6 Pieces of dry diamond drill bits Kit for drilling holes diameter of 9/16 inch (14mm).The Larouoba ceramic tile drill bits are extremely heat resistant and efficient due to their special cooling wax filling.
• 【Unique Cooling Wax】Diamond Drill Bit integrated with wax lubricant inside which melts while dry drilling and cools the cutting surface. This allows for longer drilling without much wear on larger projects.
• · 【Durable & Efficient Dry Drilling Design】Diamond Drill Bit integrated with wax lubricant inside which melts while dry drilling and cools the cutting surface; Water can be used as additional cooling to prolong the life of the bit
• · 【Widely Application of Various Materials 】Larouoba Diamond drill bit C45 tool steel gives the diamond coated drill bit set robustness. It can be used for porcelain, ceramic, granite, marble, masonry, concrete, various types of tile. (Note: not for wood).
• · 【Applicable To The Machine】Round shanks are compatible with most machines such as hand drills, angle grinders and bench drills. Wet and dry use, water can be used to cool the drill bit and prolong the service life. Please NOTE that you need to reduce the speed when drilling the glass, about 800-1000RPM.