Alpen 25200500100 "Profi" Tungsten Carbide Roof Tile Drill Bit with 1/4 Inch Hexagonal Shank, Silver, 5 mm

Amazon

For the hardest roof tiles/Long tool life Surface: GM-finish Special drill bits for rotary drilling in roof tiles, concrete tiles, cement asbestos, slate, ceramics, tiles, marble and granite, Manufacturer: Alpen

Zoro Tools

5.0mm x 100mm ROOF TILE DRILL 1/4" Hex