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That third video is a crock. My friend's wheels when broken in will spin longer than the ceramic bearing tested second. And they aren't ceramic, just standard steel bearings.
If you're going to post videos of comparisons on hot topics, be sure to do your homework about how the test was done. There's no detailed info about the type or make of the bearings tested, the age, the wear, etc. Not impressed by any of those comparisons. I can make steel bearings spin just as long as any of those "ceramic" demostrations.
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