If you want precision drillingdriving in a wide range of material including wood steel aluminium and more this 20 piece drill and driver bit set from clarke is ideal manufactured to the highest quality the drill bits in the set are titanium coated for durability and high performance these bits operate at cooler temperatures than standard hss bits which means they can be used for prolonged periods without risk of damage the titanium coating also extends the lifespan of the bits meaning t