what size are hubstack bearings?

one of my 888x’s hubstack bearings isnt spinning good so i need to know what size bearing i need and where i can get one.

I am not sure what size it is, but you could buy a whole new kit. YoYoFactory – YoYoExpert

I wouldn’t recommend it though. If the bearing isn’t spinning that great, you might just have to clean it. How to Clean Your YoYo Bearing - Yo-Yo Mods and Maintenance - YoYoExpert I would try cleaning it before I bought a new bearing.

Size A

would the SPEC small size bearing be the right size?

Yes, I am pretty sure it is.

ok thanx