I was at DDP having my current injectors tested (bodies and all). While I were testing the injector bodies we borescoped these injector nozzles to see what 15,000 miles did to them. As far as we could tell it did nothing.
The install tool is not included. However the width of a 22mm wrench can be ground down and that will work.
Also I just checked and I have 6 new copper washer that I will include with these nozzles.