Shengshou Snake 15" Magic Ruler Twist Puzzle, Red/Black
It is a toy with 24 wedges identically shaped liked prisms. The wedges are connected such that they can be twisted, but not separated. Solve one shape and move onto another - or devise your own creation to challenge and confound your friends. Turn a snake into a swan...a bat into a ball, a turtle into a terrier, all with just a few twists of your imagination.