I stand corrected I checked the YoYo wiki but not the museum . I guess it was just a c bearing and spr, I’m sure I tested something like that back in the day. I didn’t know it got released or had an official name and i definitely don’t want to throw something that heavy anymore
I collect responsive yoyos the yo’s I have listed are all I need to have every hi end responsive yoyo ever made. I throw every thing I have and enjoy them all. None are alike!!!