This is a powerful tool that, with some practice and misdirection, can be used to devastate your
spectators. However, the DVD is lacking as there are really only 2 applications they give you for
the gimmick, even though there are thousands of uses, and they somewhat rush through the explanation
(though it is a simple enough explanation, i'm not hitting them too hard) but more thought could've
gone into it.
Overall, if you have a spare to spend, go ahead it is a great trick.