I printed the lever and adjuster in both PLA and PETG using the built in profiles in PrusaSlicer but with 50% infill. Both levers have worked well for test rides. I plan to do some trail riding to see how the lever holds up, but so far fit is exactly as my stock lever. You can adjust the lever using a 4mm hex key.
This lever is meant to be printed as a back up and probably not something I'd use for long periods of time unless printed out of something like Nylon or something. I plan to print a bunch and give them to my riding buddies to see how they hold up.
The author marked this model as their own original creation.