Kylewrote a review of RockyMounts Drive Shaft Thru-Axle Bike Rack Adapter on September 9, 2016
Familiarity: I've put it through the wringer
Contrary to some of the other reviews this holds my bike really well. My axle does not spin in the clamp at all. The adaptor does rotate, however the directions say that is normal and once you attach your rear wheel there is not more movement.
Get the lock cores with it and you have a sturdy, safe rig.