The Alpen Keramo Extreme 8.0mm Tile Drill is built for efficient and precise drilling in hard materials like porcelain and granite tiles. Brand : Alpen Size : 8.0mm Application : Suitable for all tiles, especially porcelain and granite Machine Compatibility : Designed for cordless machines, 18V combi drills (rotary only) Optimum Performance : Use low-speed setting with firm pressure Durability : Natural cooling between holes extends drill life