Left Handed Crescent Wrench
Where can I find an adjustable left hand lock? 3
All left-handed items are sold at the Springfield Mall's Ned Flanders Liftroom Store.
Good for your research.
Adjustable metric wrench
This is where you will find the right hand ones, wait, the left and right adjusting spinners are the same! So you can adjust it on both sides.
Believe it or not, custom wrenches are available at many discount tool auctions. The direction of the thread on the adjuster is opposite.
On any Ace hardware other than chrome roller bearings.
In your left hand