Features:1. Made of 3D matallic nano， thin and portable， convenient to carry. 2. Enables users to construct a splendid and vivid model just from laser cutting steel sheet.3. Slot-and-tab designed， no tools， fasteners or glue required， only your hands are required.4. To exercise the hands-on skills and dimensional thinking ability of your children above 14 years.5. A good decoration for your desk， bookshelf， table， bed， etc.6. Simply pop out the pieces and bend， fold， and assemble them using the included illustrated instructions.Note: Please take the sheet out carefully to avoid any damage.Specifications:Material: Matallic NanoSuitable Age: 14+Color: SilverAssemble time (approx): 0.5~3 hoursSize(when finished):Steam Locomotive: 11.4 * 2.5 * 3.2 cmPackage include1 x Metallic Nano 3D Puzzle Model Note: 1:The real Color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2:Please allow slight deviation for the measurement data.