No secret, this is a type of reel that allows you to vanish objects. The only problem that I have found with it is that it is a tad bulky, and with some "clothing" choices, will not work as well as others.

However, worth the entire price of the trick is the fact that you can take this thing apart and if you ever need elastic or parts of a reel. Totally worth all the money that you will pay for this!