Video Link: http://www.youtube.com/watch?v=D9vQo1HIdtY This video is for demonstration purpose only Highlights Assembly time: About 15-30 mins No tools or glue required Laser-etched Choose from 18 styles Recommended ages: 14+ Description     ZOYO 3D metal model is very precise，30 minutes to several hours to complete depending on the complexity of the model，the metal assembly work needed，so please do not irritable when assembled，have patience，small parts must use pliers clamp down one by one，not directly hand to breaking，otherwise easily lead to operating parts breakage. ZOYO are amazingly detailed do-it-yourself 3D models that you assemble from single sheets of laser-cut steel. Thanks to the ingenious slot-and-tab design， no tools， fasteners， or glue are required to build ZOYO 3D Sculptures. All you need are your hands! Simply pop out the pieces and bend， fold， and assemble them using the included illustrated instructions. Currently available in a wide range of styles covering a variety of world-famous engineering feats such as the Titanic， the Eiffel Tower， the Ferris Wheel， and more. Depending on the complexity of the model， ZOYO can take anywhere from 30 minutes to several hours to complete. Transform a metal sheet into a 3D model ZOYO are amazing miniature 3D models that are made from sheets of laser cut metal. Simply pop out the pieces， perform a bit of (sometimes intricate) folding， and voilà! Flat metal is turned into the Eiffel Tower， the Titanic， a Ferris Wheel， or one of many other engineering feats. Grand detail on a small scale Most ZOYO 3D Sculptures can easily fit in the palm of your hand， yet feature an impressive level of detail as well as textural design and etching. The laser cutting process allows for intense precision even at a small scale. No specialized tools， screws， or glue required! ZOYO require only your hands (and perhaps a pair of pliers to make things a tad easier) for assembly. The entire model is contained within one (or more) four-inch square sheets of laser-etched steel. A set of instructions guides you， step-by-step， through the process of building your model. Cool decorations & conversation pieces Not only are ZOYO fun to build， they're great decor items. Keep them on your desk， bookcase， or nightstand. Although made from a thin sheet of metal， they are very durable. Choose from eighteen styles ZOYO 3D Laser Cut Models are currently available in eighteen awesome styles. Multiple views of each style are presented below. Detailed information about the complexity of each model is included in the table below. Material: Steel Three-dimensional Size: 6.6*6.4*3.2cm (Different models may vary in sizes which are much bigger or smaller) Weight: 0.5kg     Warranty: 1 Month for manufacturing defects only In the package:  2 x ZOYO 3D Metal Nano Puzzle Model Building Kits Toy