Barrel Roll Puzzle Fun, Difficult Wooden Brainteaser Gift STEM Desk Toy

Crux Barrel Roll Puzzle - A Fun And Challenging Wooden Brainteaser Puzzle Try And Sort The Coloured Balls So Each Column Is A Single Colour - Easier Said Than Done! It Is Difficult To Change One Column Without The Others Mixing Up! A Fun, Challenging Puzzle That May Cause Frustration - Makes A Perfect Gift Try With Friends And Family To See Who Can Solve It Comes In A Nice Presentation Box With Instructions And Link For Solution, Manufacturer: Crux Puzzles