Thank you for viewing! This is a set of 4 metal puzzles, including 3 Hanayama cast puzzles and 1 unknown manufacturer's puzzle. I've played with them a few times, but they have been stored at home. Some of the puzzles are level 4 difficulty. *There are no instruction manuals, but you can take pictures and search on your smartphone or computer to find the solutions. If you are interested, please consider purchasing them. I would be happy if you would buy them☆ Please understand that these are used items stored at home. - Type: Metal puzzle - Quantity: Set of 4 - Material: Metal - Design: Puzzles of different shapes - Usage: Ideal for finger exercise and improving thinking skills