Ezhishop golden gate bridge DIY 3D Puzzle Model Toy-20 Pieces Made of Eco-friendly paper Easy to insert the parts together,Refer to the photograph on the package and the instructions on attached booklet, punch out the interlocking hole after you poping out the puzzle pieces. You don't need any tools, such like knife, glue and scissors. The whole assembling process is safe Durable packaging,fit for long-distance transport Product size:48*20*11CM