High quality, temperature resistant diamond grit for efficient and clean holes. Filled with cooling wax and suitable for dry drilling. For longer life, the use of water or coolant is recommended Application: Glass, Tiles and Hard Tiles in Ceramic, Porcelain, Granite Marble, Quartz, Limestone, Fiber glass, terrazzo, porcelain stoneware, masonry, stoneware 7mm hex shank suitable for drill chucks of all common drills and light hammer drills from Bosch, Hilti, Metabo, Makita, Milwaukee and many others 'other Scope of delivery: Drill diameter: 6 mm, 8 mm, 10 mm, 12 mm Please note our application instructions (see below) for working with diamond drill bits, whether you are a tiler, stonemason or handyman, with the Statz diamond drill bit, every hole is drilled. Tiles, marble, granite, ceramics, porcelain stoneware, stone slabs, concrete, reinforced concrete - hole cutters go Professional quality vertical diamond drill Reliable and universally applicable Maximum service life ONLY by cooling while drilling with water or a drilling coolant. Diamond drill SET: Diameter (diamond head): 6 mm, 8 mm, 10 mm and 12 mm hexagonal shank: 7 mm Total length of the drill: 65-80 mm Other detail: Please note the picture For glass, tiles, ceramics, porcelain, granite, marble, quartz, limestone, fiberglass, terrazzo, porcelain stoneware, masonry and sandstone. Application: 1.) Use the carbide drill provided to create a starting notch. 2.) Now place the diamond drill on the start notch at an angle of approx. 45 and drill carefully. 3.) As soon as the notch is deeper, place the machine and the diamond drill in an upright position. 4.) Circling slightly while drilling , this ensures that dust and debris are removed from the drilling. 5.) Pause the drilling and cool the diamond drill and the material at regular intervals 6.) Repeat steps 4 5 until you have finished drilling the hole. 7.) Always clean the diamond drill after the end of the drilling process, and remove all residues before re-use. Warning: Cordless screwdrivers need a speed of at least 1600 rpm. A speed of over 2-3000 rpm is recommended for electric drills. The use of machines with low power and lower speed reduces the life of the drill extremely.