I've been using the set for ten or twelve years now, the set still contains a complete set of native bits, although two or three screwdrivers have already been replaced. Over the years, all the bits from the kit have worked, all have signs of wear, but it is still too early to change at least one. Stronger, probably, only specialized bits for working in impact wrenches. Those in the kit will last for years for ordinary home-summer-garage work, for which they are, in fact, intended.
I've included some photos to help provide a more detailed analysis.
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