I like the effect. The gimmick you get is basic, but it works. You just got to twist it. The
teaching quality is probably the worst I've ever seen. However, You are given enough to learn the
effect. If you perform the effect you will get huge reactions. My advice is to borrow the device.
Also find a way to safely store the gimmick. It's not fragile. You just want it to look nice. You
can find performances on youtube if you're unsure. I highly reccommend the trick.