This is a great kid's routine with a lot of scope for some comedy. You show three blocks each boldly colored in Red, Yellow and Green. You cover the blocks with a tube and in an instant the Yellow block vanishes and can be produced from an entirely different place.
Each block measures about 2. This is a very well made prop and an excellent deal at this price.
Also available with the letters 'A', 'B' and 'C' lettered on them.