Unique Puzzle: Passing a Button Through a Hole - Brand: PUZLAND - Product Name: HIKIMI - Product Type: Button Hole Puzzle - Included: With chain - How to Use: Pass the button through the hole Thank you for viewing. This is a puzzle, like a magic trick or a brain teaser, where you can't easily remove the button once it's passed through the hole. The box is old, but the contents are in beautiful condition as it has not been used.