What does beadblasted mean?
When something is BB’d its basicly like sode blasting or other kinds of blasting except they people blas it with microscopic beads.
What does it do to the yoyo?
Its just a kinda finish and it makes the grinding surface better.
The small beads hit the yoyo and make slight “dents” in the metal, so many of these cause the friction from the skin onto the metal to be less than flat metal, and this allows for longer grinds and a very smooth finish.
Only problem with some beadblast, is that if they are slightly rough, they can really wear out a string quickly.