DT Swiss promote their 240s rear hub as a tool-less design. Not sure how the justify that claim when to replace all of the bearings you really need the ratchet removal tool as a bare minimum. In reality the complete set of hub tools makes the job fairly straightforward, but as the picture below shows, its hardly "tool-less".
This kit is from Sellution Components. Look for DT Swiss Hub Service Tool Kit (240S, 240+s, 440-FR) on Amazon.