how many @'s were made, and why can't i find anything on them?

General Yo-Yo
1

I’m getting one in a trade, and I wanna learn a bit more about it.

Can anyone help me out?

2

@'s?!
Never heard of them.

3

Diameter
56.8 mm / 2.236"
Width
42.8 mm / 1.685"
Weight
68 grams