Saying that, VSW007 has got longer axles, of which the hole is 2mm further out, this facilitates the use of 0mm offset wheel. A 2mm washer is to be added BEHIND the hex if VSW007 is used.
On VSW006, it has the same overall length, just a different combination -52mm shaft (VSW006-01), and a 0mm offset wheel shaft (VZW054-02).