Alpen 25200350100 "Profi" Tungsten Carbide Roof Tile Drill Bit with 1/4 Inch Hexagonal Shank, Silver, 3.5 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, Weight: 0.02 Pounds, Manufacturer: Alpen

Zoro Tools

3.5mm x 100mm ROOF TILE DRILL 1/4" Hex