RS PRO 5-Piece Glass Drill Bit Set, 8mm Max, 4mm Min, Carbide Tipped Bits

Use these RS PRO bits with your power tool when drilling through fragile materials such as ceramic, tile and glass. Before boring through, the pointed ends create a small preliminary hole in the material to ensure it doesn’t fracture.
The shafts are constructed from hardened steel and the ends are carbide-tipped. This means they're strong and highly durable. The bits are fluteless as the twisting motion of a flute could cause fractures in glass or other easily broken materials.
This set contains five drill bits, ranging from 4 mm to 8 mm in size so you can find the right diameter to suit your application. They're supplied in a soft storage case to make transportation and organisation easier. These bits have been tested and approved by engineers to ensure they're up to professional standards.