Please read below information before place an order 1. These puzzles are mini after finished, please check the size clearly. Do not ask for refund or leave negative feedback to us. 2. Patient and careful makes the model perfect, we send every puzzle in good, If you are a quick temper these puzzles are not suitable for you. 3. A little bit bending cause by transportation is limited, will not effect to your model, If you are a completist online shopping is not suitable for you. 4. Above information just for noted to bring you a better shopping experience, any question, please kindly feel free to contact us or leave message to us. Product introduction: this is The high quality metal model produced by the ultra precision laser cutting. Metal model is use of superfine processing of metal sealing by laser radar, and then parts removed, like metal process as bending, folding and then plug in, you can create a world model as small palm size. products include 1~3 pieces puzzle boards, the most simple product have only one piece of puzzle board and just need 30 minutes to finish it, but the most difficult product there are 3 pieces of puzzle boards and need more than 3 hours to finish. No need glue, just assembling the product as the user manual said, but prepare scissors and pliers, if have a small pair, there will be most convenient.