What is the difference between the onedrop tenball bearing and the yoyojam speed bearing?
Good question. I have no idea. The ten ball is more expensive?
i bet a little bit of the price is the name brand. is a speed bearing ten ball?
yep, both are ten ball.
The SPEED bearings are 10 ball. From memory, I think the difference is in the type of cage used to keep the balls in place.
Yuki
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The 10 Ball is better ;D
Only kidding, that’s simply my opinion, but they most definitely have a different feel to them. One of those things you just have to try for yourself and decide what you like better. 
I agree. I prefer the 10 Ball over the YYJ Speed most of the time. Both are great bearings. I have just found the OD bearing to be noticeably smoother. I do buy and use both. Normally, I like to keep things stock.
Probably all made in the same factory bro.
Possibly, but that doesn’t mean it’s on the same assembly line or same spec run.
I am now curious. I gotta take some bearings apart and see the differences. Might post a picture. That wouldn’t necessarily be conclusive.
Many things could be different. Materials, build quality, care, machines used.
theres your answer guys 
Thanks!