These covers can be assembled with YoYoFactory SuperNova and SuperNova lite. (Note that I am not sure if this fits into 2012 SuperNova.)
These covers prevent yoyos from scratching. Originally, this cover was made for 3A use or 5A. When playing 3A, covers reduced the noise of crashing yoyos.
Playing yoyos with these covers is your responsibility. Covers increase frictions so some tricks are more difficult to do than without covers. Covers might give slight vibe. They add about 6 grams to a yoyo. Thickness is about 1 to 1.2 mm.
You can choose materiasl. I recommend " White Strong & Flexible Polished" for less friction.
This is still 2nd prototype. But I won't make a change for a while.
This model has 4 parts for a yoyo.
Again, playing yoyo with covers is your resposibility.
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