Lasts up to 10 times longer than standard tile drills. As wall tiles are becoming larger and harder, drilling holes with a tile drill is increasingly challenging. For this reason, Bosch has developed the Expert HardCeramic drill. This drill can bore into hard ceramics dry. Additionally, it lasts significantly longer than the benchmark tile drill. This special hard ceramic drill utilizes Bosch's carbide technology. Carbide is the hardest of all metals. It is combined with an advanced multi-cutter tip that distributes the workload across several asymmetrical surfaces. This complex drill tip, manufactured using a fine-tuning process, allows for precise starting without slipping or scratching. The Bosch Expert HEX-9 HardCeramic drill is suitable for drilling into ceramics. It can drill holes in hard tiles without the need for lubricants or cooling. Hexagonal shank for maximum power transfer in standard drill chucks and hex screwdriver chucks. Diameter: 5.0 mm, 6.0 mm, 8.0 mm; Total length: 90 mm.