The Alpen Profi Keramo 14.0mm x 150mm Tungsten Carbide Rotary Ceramic Drill is designed for larger, precise holes in tough materials like tiles, ceramics, and marble when using cordless drills on rotary mode. Brand : Alpen Size : 14.0mm x 150mm Material : Tungsten carbide tip for enhanced durability Application : Ideal for tiles, ceramics, and marble Machine Compatibility : Suitable for cordless drills on rotary-only settings Performance : Clean, precise drilling with no impact