Ordinary extractors can be messy to use, and you have to be careful to align them properly. This new German set of five works differently. After drilling a hole in the head, all you have to do is to drive (i.e. lightly hammer) the appropriate extractor into the hole (3/32" to 1/2" diameter). The hardened, tapered edges automatically bite into the interior body of the screw or bolt, allowing you then to simply turn the fastener out. Nothing could be easier.
This is an industrial extractor, not a DIY-quality tool, and will perform for you accordingly.
Made In Germany.