I had the tool - but it just does upto M6. I've just tried to put an M10 half hex nursert with a bolt and it didn't go so well.
I think the hex in the crossmember has rounded out and the nursert feels like it won't compress anymore even though it's not tight. I think the oversized nut and the washers stopped spinning.
I've done it ok in the past ok - though that was wish nursert that were easier to compress.
I've cleaned the washers up and greased it all and will give it another go to see if it will fully pull it down on a second go....