Crazy Cord

You display two different colored strings which pass through two plastic blocks. Pull both strings one at a time to show that they actually pass through the blocks.
Now, by simply sliding the blocks up and down, the strings will always change position!

• The object works by itself and you can repeat the change of place as many times as you want.
• The blocks measure 5.5 cm (2.16") x 1.2 (0.47") x 1.2 (0.47"). Since it is pocket-sized, you can always carry it with you!