I have access to a laser. If I need a tool for a specific job I generally draw it in AutoCad and cut it on the laser. I used a couple of them when I was putting in a set of Prothane bushings on my 2. There were a couple of nuts I could not reach and get leverage on using normal tools. The 17mm stainless breaker was used to loosen the tranny filler bolt on my MKii Supra.
I still have the dxf and dwg files for them (AutoCad files) if anyone needs them.
Here's a thing that I cut recently that is more recognizable.
