The brand is Axis and they are made in China. These have ABEC 5 quality ball bearings. They are a high speed electric motor grade bearing. The same brand bearings I have been using in my own business here in Portland for the past 6 years without any issues. That is why I have stayed with them. I have personally installed over 500 of these sets myself. So I totally understand why you don't want to do the job twice.