Effortlessly hard material such as tiles, granite, porcelain stoneware or marble drilling. Tile drill set - 5 pieces. 5, 6, 8, 10, 12 mm and 6 mm carbide drill diamond drill bit tile drill diamond drill bit for drilling tiles and much more. High quality temperature resistant diamond grain for efficient, clean drilling Filled with cooling wax and suitable for dry drilling. When drilling, there is no need to be cooled as the drill bits inside are equipped with cooling wax. However, it can increase the life of the drills. All holes should be done without pressure with the diamond drills. 1) Use the included carbide drill to create a starting . 2) Now place the diamond drill at an angle of . 30 on the starting and drill carefully. 3.) Once the is , place the machine and diamond drill in an upright position. 4.) Circle lightly while drilling, this ensures that the hole is free of dust and residue. 5.) Pause drilling, and cool the diamond drill and the material at regular intervals. 6.) Repeat step 4 & 5 have finished the hole hole. 7.) After the drilling process is complete, always clean the diamond drill and remove all residue before reuse. Cordless screwdrivers need a speed of at least 1600 rpm. For electric drills, a speed of over 2000 rpm is recommended. The use of low-power machines greatly reduces the life of the drills. Drills Type: A: Tile Bits Material: diamond colour: blue Package Contents: 1 set x stoneware Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.