Magic 3d printing pen lets you create 3d models with your hand. Lightweight design with abs material 1.75mm filament. You can create 3d art, various amazing things & 3d models in thin air. It works by heating up the plastic filament and pushing it through the nozzle at the end of the device. When you press the button which is placed on the side you can start drawing on a surface or even in thin air. Make the model you want in any size you want.