Why are bimetals so popular now? Why does no company sell 5a yoyos?

it’s compatible? does he fit?
but what does it mean? a counterweight you can do with anything … even with a rubber to be erased.
As mentioned above, the 5A yoyos are normal yoyo, the only differences can sometimes be in the response system … for example Yoyorecreation Mr. Butcher and Z-on, specifically designed for 5A players, have dimension pads increased