put tape on those black locknuts to protect the finish...

a quick search and the 5th option opened presents...
https://toolsandmore.us/shop-fox-x17...0ff08c6f87f2a5

i'd imagine a similar 34mm version is out there, somewhere... a 1 5/16" wrench will be slightly under 34mm, and a 1 3/8" will be slightly over 34mm........ i'd get the 1 5/16 and grind to size....
or just swap out those pesky odd jam nuts, since, being a co-op person, i have a 6"x 14" bin of those sorts of things.... (hint)

as to the hook spanner... you can never have enough, or find the one you know you had at one time, many decades ago....
try taping and old channel lock pliers...?