Authentic High Quality i-Kason&reg; New Favorable Imaginative DIY 3D Simulation Model Wooden Puzzle Kit for Children and Adults Artistic Wooden Toys for Children - Quadrangle DIY 3D wooden puzzle. Educational, unique and enhances creativity. Use your brain, exercise your patience, is unable to untie the knot, but as long as the master of the structure, is sure to solve. Natural wood - can be stained, Lacquered, painted, or left as is. As a gift for friends as a home decoration.