6pcs/Set 3 Wooden Luban Puzzles and 3 Metal Puzzles Combination Wire Classic Knot Intelligence Buckle Interlocking IQ Brain Teaser

4 years and above. Assembly and disentanglement puzzles have been around for centuries and they have provided generations of kids and even adults with fun while keeping their minds sharp and creative. Suitable for everyone, especially those who like to be challenged. For such a simple concept and basic materials, these toys give teens, adults and seniors hours of endless enjoyment. HIGH-GRADE MATERIAL: Different metal wire classical brain teaser puzzles toy made of high quality metal that is not easy to rust, no sharp edges, stout and durable. It's the best birthday gift for your kids!. HIGHT VALUE IQ TOYS SET: 3 Wooden Luban Puzzles 3 Metal Puzzles IQ test toy help to exercise brains, improve problem solving abilities, relieve pressure and more. UNIQUE DESIGN: These educational intelligence toys is designed to stimulate the potential of thinking, develop your children's intelligence and practice manipulative ability. PERFECT GIFT: The metal and wooden puzzles may look simple, but it c