It starts with the fact that the contents of the box completely arrived jumbled with me and once had to be sorted. -The Bit holder: without the extension can not be used. The reason for this is the nature of the recording. The bits are inserted purely can not be fixed, but are only held magnetically. The smallest pressure the bits disappear in the interior of the holder, since the magnetic holder to slide rearward. In the extension in turn keep the bits very poorly.
-The Bits: Make at first glance a bad impression. But z..B. are the heads of the small screwdriver so thick that screws with a narrow slit as not possible, for example by a watchband open.
Conclusion: I would return, but that's not worth it in the relation price / shipping costs. Here is here again, who buys (to) buy cheap twice