Hey, guys. My Battosai’s axle is stripped. Does anyone know what size I need to get for the replacement, and where I could find one? Thanks. 
The size is 8-32, not sure the length. You can probably find a replacement axle at somewhere like Lowes, just take the original axle with you and ask an employee.
The easiest thing to do is take it to a hardware store and see what thread size fits. Of course that all assumes that it’s the axle that’s stripped and not the yoyo itself. If that’s the case you need major surgery. There’s a couple of modders here that do that type of work.