DIY 3D Wooden Puzzle: Tank. Wood made from safe, high-quality, non-toxic, plywood. DIY- Assemble wooden puzzles. No additional tools or glue necessary. Great activity for both children and adult while improving motor, cognitive, and emotional skills. Use for educational purpose, as collectibles, and/or decorations. Fun, unique, and engaging-- makes the perfect gift! Assembled size: 5.31 x 2.95 x 2.76 inches