Get ready to twist and turn with the Cast U-U, a challenging metal puzzle that will put your problem solving skills to the test. This 3D puzzle from Hanayama Huzzle features a unique U-shaped design that requires you to think creatively and use your spatial reasoning to solve it.

The objective of this puzzle is to separate the two U pieces. The two U-shaped bolts and four nuts looks like a combination of spare parts but looks are deceiving. This puzzle comes with a deviously hidden trick. The key to unlocking these parts is to look carefully at each part first. With its sturdy construction and challenging solution, the Cast U-U is a must have for any puzzle enthusiast. Designed by Kyoo Wong from Hong Kong.