Gonna be replacing with the new version. These adjust from 155-185mm with a 6mm hex wrench. Fits onto a square taper BB. $300 obo plus shipping.
I personally don’t recommend upgrading to the new ones if you can help it due to poor durability and clicking.
The adjustable cranks made by Croder are worth a look and so far have been less fussy than the current PC cranks, though it’s not without its own quirks.