BUY THIS PRODUCT! If you are looking for the BEST invisable thread on the market then get this.
Forget about doing the Hummingbird Card With a single card, you could do it with a whole deck. You
could levitate forks/knives/ cups (paper/plastic) or while you are taking a picture at the zoo you
could leave your camera suspended in mid-air while you are making sure the picture is just right.
This is the stop to an invisable thread source. My rating is 500 million out of five.