Brain Puzzle - Intelligence puzzle toy originating from ancient China called Kong Ming Lock. Wooden game with interesting logical thinking and perfect for brain development. Nice challenge for both adults and children. Perfect gift as a family game and gift for your children.

COMPACT SIZE - Product dimension: 1.8 x 1.8 x 1.8 inches (4.5 x 4.5 x 4.5 cm). Weight: 0.04 pounds (20 g). Nice addition to a desk or table, worth showing off! This one is so attractive that it can easily be used as a decoration in a study, family room, living room, work table, office or waiting room.

RECYCLABLE MATERIAL & HANDMADE WOOD - Assemble the different wooden pieces into a diamond shape. Precisely assemble non-identical pieces into a 3D shape. These mental puzzle toys will challenge your intellect by stimulating amazing creativity. It requires careful observation and thinking, analyzing its internal structure during assembly.

UNIQUE - Each puzzle cube is completely unique, handmade from premium quality, completely organic wood by the finest master craftsmen using only timeless traditional methods and techniques. It is made of durable wood with environmentally friendly and non-toxic paints.