Exactly the reason why they are fragile.
I don't know, but mine definitely got bent and caused massive vibe that can't be tuned. I can even see the flat part on the cup bent visually.
Never happen or seen on any other yoyo.
it is clear that they can not be as strong as the original ones in 7075 but cost $ 20! the sixth part of a YYR authentic ... what do you expect ... but until you whisk them play well as a YYR ... and if you bump them, patiently, $ 20 will get a new one. From the other side, one YYR, is not invulnerable, is not done in "adamantium" and if impacts fort ruins, you will damage the same (always aluminum that is!)
you understand that the material is not a problem for the workability or the thickness and that the cost difference between a 7075 and 6061 bar is ridiculous ... then you made two accounts and draw your own conclusions.
They are made with the same aluminum of a 1drop, a clyw, etc ... or a rebellion ... but already a rebellion which should be "low cost" minimum costs $ 50-60.
P.S. however, now the problem is solved ...these copies are no longer available for several months.