The B-17 Flying Fortress Metal Earth model is a laser cut model that once assembled creates a unique 3D model. The pieces are cut out of sheets of thin metal, just carefully pop out the pieces and follow the assembly instructions to create your 3D model. The B-17 Metal Earth model is recommended for ages 14+ and measures approximately 5.78"x 4.44"x 1.69" when assembled. The model does requires needle nose pliers or tweezers for assembly.