Screw Puzzle BOX 331 pcs" is a three-dimensional mechanical construction puzzle set that offers an exciting assembly experience using 331 pieces. This set promotes engineering thinking, patience and detailed attention to instructions. By assembling various mechanical designs, children gain an understanding of basic mechanics and engineering, learn to follow complex instructions and solve problems. "Screw Puzzle BOX" is perfect for young inventors and puzzle enthusiasts who want to explore the world of mechanics and construction.