Useful compilation.

With this set, you can supplement his Dremelsystem excellent because it includes not only a set of fast-wearing parts (grinding cylinders, cutting / grinding wheels, etc.) and some new parts also two new attachments: a header for milling and a (lawn mower) blade sharpener.
The blade sharpener is doing its job very well, even if I can work faster and more accurately with Flex and file, but that's purely a matter of practice. The Cutting Guide is also useful, but it does not look good, exactly where they milled. Man must therefore according to prefigure well and be very careful during milling itself. In a straight line best with stop (metal bar or similar).

The only criticism is the type of storage ... The two boxes are when all parts of the set into sets (Prerequisite: The white plastic inserts out and hidden among them, not really holding partitions pure) really full. And they also do not fit in the carrying case ...

As with the Dremel applies per se: For hobby technical projects very useful, but 100% are to use the parts not always.
Nevertheless, absolute buy recommendation!