Motor hub
We can easily do this holder by micro cnc turning, to be sure center hole is always within 0.001 mm tolerance, we are making mostly for racer not the regular consumers so quality must be good, not parts to produce especially, to hold the tolerance after hard anodizing finish, but we like challenge.
We use micro cnc turning machine to do the parts 100% to avoid the center is 0 .00 mm and then do the Titanium color anodizing, again this RC parts tolerance is tight 0.02 mm.