These drill bits have been specially made so that you don't have to change when you're drilling different materials. They are brazed to ensure they can withstand extreme temperatures - making them durable and flexible - so there's no longer any need for you to keep bits for different applications in your tool box. Now, one set does the lot: steel to 70Rockwell, granite at 500RPM, concrete at 1000RPM, tiles and marble at 200RPM, glass at 100RPM and wood at 2000RPM. 7 bit set sizes are 4, 5 ,6, 7, 8, 10 and 12mm.
- drill bits for use with virtually all materials
- made to withstand high temperatures
- suitable for steel, concrete, glass, wood, tile, marble and much more
- set includes all commonly used sizes
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