This brain teaser set includes 200 pieces of Luban Lock puzzles, featuring satellite, plum blossom, and football lock designs, each crafted from wood. Each puzzle measures 5x5x5 centimeters and comes individually packed in an OPP bag, making them ideal for children aged 6 to 12 who enjoy hands-on problem-solving challenges. These interlocking puzzles are used to develop spatial reasoning and patience through assembly and disassembly. Sold wholesale by the box.