Tool to remove flat hex nut from underneath kitchen faucet

Does anyone know of a tool that I can use to remove a flat hex nut from underneath a kitchen faucet? It's a tight squeeze under the sink, so a regular wrench doesn't work. My basin wrench doesn't seem to be able to open up wide enough to grab the nut, and plumber's sockets don't seem to be big enough either. Any ideas? Sample photo attached.

 

There's another type of this nut that has screws attached to it. Instead of needing an awkward wrench to tighten and loosen, you hand-tighten it then then use a much easier screwdriver to do the final tightening. So much easier to install and remove, but I have yet to actually see one in person that didn't require purchasing an expensive faucet just to get it.

but I digress.

The only thing that comes to mind is a Basin Buddy. But I think your nut is too large for that.

Maybe some more liberal dosing of liquid wrench, etc. will allow the basin wrench to work well enough

 

I thought basin wrenches came in two sizes but it's been quite a while since I looked.

 

Thanks, appreciate your time. I'll give liquid wrench a go and see if that helps.

 

They do make two different sized basin wrenches. The one below is the larger one.

 

Could also use a very large crow's foot with ratchet and extension.

 

I have also had luck sometimes with a very large pair of channel lock pliers held almost vertically then use another wrench to turn the channel locks.