You're probably familiar with this too: Especially when you're working with a cordless screwdriver, a screw head is quickly damaged and can no longer be loosened. Thanks to the screw extractor set made of hard HSS steel, this is now a thing of the past!
Drill a hole in the defective screw: To do this, simply use the side with the drill head and mill into the screw head until a sufficiently large indentation is created. Then turn the bit around: Place the extractor head in the previously milled hole of the screw head and slowly screw counterclockwise. Without damaging the threads in the process, unscrew defective or damaged screws in this way.'
