Thirty years of research have allowed magician Harry Robson to arrive at the exact formula for this "roughing fluid" stick (or roughing sticks).Easy to use, you can process more than 5000 cards with this simple stick!The stick leaves no residue and once applied the cards are easier to separate than with the spray version.Of course, only your imagination limits the possibilities of using this new formula roughing fluid in stick form.Note that it comes without a routine.It's a stick of hard substance and what it will allow you to do is simply amazing.When you rub the surface of the stick against a card, it will act like the roughing liquid does, but better. The cards stay together in rough pairs, but are more easily separated without fumbling when desired. The stick leaves NO RESIDUE, and with the included stick you can create at least 150 invisible games! This is, for all intents and purposes, a lifetime supply. The best part? It's so cheap. Thank you ) Vanishing Inc. for that !Imagine the possibilities... Packet tricks, Brainwave, Invisible Deck, and more have become MUCH easier to perform, all by yourself, and many original tricks that would have required a spray shed or a craftsman to make can now be done from your kitchen table in minutes.To see how practical this is, you can watch Harry Robson create an Invisible Deck in less than two minutes in the trailer. This is great new technology, at an unbeatable price!"One of the main advantages is that you can create a complete game very quickly. On the instructions, Harry shows how to assemble one in less than a few minutes. It's the perfect size to carry in your close-up kit if you need to touch up cards or create a deck quickly." - Paul Romhany, *Reviews Vanish Magazine