Wil is famous in the puzzle community for the complexity and quality of his collection. it's important to note that he does not provide solutions with his puzzles.
Recently re-released, this is the metal version of the first puzzle box Wil designed back in 1984. A sequential discovery puzzle, the aim is to remove the gold anodised metal rod inside. Everything you need to solve this is actually inside the box. Wit a beautiful solution, it's unlikely to be solved by luck. As usual with Wil's work, this puzzle is of the highest quality available today.