As a magician that has worked will billiard balls for a while, this is the worst set of silicon balls I have ever tried. My gimmick came with a tiny crack but it had no effect while in usage, the balls slip out of my hands even if my hands aren't wet, and the gimmick needs to be held in place or you accidentally drop your load when you don't want to. For anyone that wants to learn billiard ball magic and continue doing so and want a silicon ball set, avoid mirage by jl and get the set by fakini.

The fakini billiard ball set is the best silicon set anyone can buy and will stay the best.

I currently am waiting for my refund for this set as well as the extra gimmick.

I like these a lot. I have very small hands so they are fine for me. Others might prefer a somewhat larger size.
I really see no difference in quality between these and the superb Fakini sets. But why should there be? They are about the same price.