General description The professional diamond drill conch.Designed for drilling materials such as porcelain, glass, marble, ceramic, rock, and granite. Its special design with brazed diamonds allows for clean and precise holes. Technical Specifications Material: Carbon steel with diamond blade Durability: More than 8 times longer Package Contents: 11 diamond drill bits in various sizes (6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 22 mm, 25 mm, 30 mm, 38 mm, 50 mm) Compatibility and Accessories Compatible with various materials: porcelain, glass, marble, ceramic, rock, granite Installation Use the drill bits according to the instructions of your drilling toolthisage to guarantee a perthisOptimal age. Use Ideal for drilling holes and cutting perfect circles in a variety of materials. To preserve the life of the drill bits, take care not to overheat the tool. Other information It is advisable to never let the drill bit dry out after use to avoid premature wear of the diamond coating.