Cultural & Origins: Kongming lock is a traditional Chinese intellectual puzzle toy, also named Luban lock. The concave and convex parts inside the three-dimensional interpolation toy mesh perfectly. Built-in assembly instructions, it is not recommended to assemble directly according to the drawings, challenge yourself first.

Best gift: Our puzzles are packed in beautiful boxes (9pcs/12pcs/16pcs version only) , Easy to use and play, everyone in the family could entertain with it in your spare time, a best gift for children and adult.

Fun toys: Different designs, Different Fun,play enough at one time. Force you to concentrate when you try to figure out the 3D interlocking puzzles. You can forget the annoyance and stress. Or keep your naughty kids busy for days. Great for party, BBQ, camping or just a nice day in the sun.

Challenges for adults and Develop kids Intelligence: Wooden puzzles may look simple,but they contains lots of mysteries,easy to disassemble but difficult to assemble,each wooden puzzle is special and unique. Each puzzle is designed to enhance kids perseverance and deduction power for improved mind sharpness and alertness.It's also a challenge for adults.

Material:High quality solid wood, corrosion resistant, not easy to crack.Eco-friendly, as well as light weight and durable.The beech wood version has a different style compared to the Hemu version and is more durable.