That's exactly what they are, from when they were labeled Taigen. They quit making and selling these right about the time I got into the hobby so mom and pop places that still have them in stock are the only place to get them. I even checked asiatam and they don't have them anymore, either. In my humble opinion these are the very best non-Tamiya gearboxes out there right now (I'm not saying Tamiya GBs are better, I've just never seen a Tamiya GB so I don't know if they're better or worse). If I find anymore I'll snap them up! These are the GBs in my Jagdpanther and I absolutely love them. MUCH more quiet than steel. If they ever get smart and bring these back I'll be the first in line to buy them.