I bought this because I imagiend it would be like Daryl's Acrobatic Knot. It's similar but this uses only one rope. You still start with a red knot, it turns blue, then yellow, and can be untied to show the odd dyed piece of rope in the red rope. The moves will take some practice but for a seasoned magician are simple. With the right amount of practice and creativity this can look astounding. The hardest part is tying a knot while not letting go of one end. and it's a secret kinda knot too. So other than that for the cheap price not a bad effect.