Plusinno DIY 3D Printer Printing Pen with LCD Screen for 3D Printing,Drawing and Doodling + 13 PLA Filament(10 Different Colors) + 10 Paper Models for Practice (Blue) Suitable for 1.75mm PLA or ABS filament. There will be some filament residue on the pen tip cause we test its quality one by one before shipping. LCD Screen shows your control of temperature and filament. Quite easy and simple to use - Side button allows you to control extrusion speeds, while up and down buttons allow you to extrude or reverse filament. Nonmetallic nozzle for fine 3D freehand drawing.(Melted material cools down very fast.) Comes with 3 loops of 3M 1.75mm non-toxic PLA filament (random colors),10 loops of 10M 1.75mm non-toxic PLA filament and 10 pieces of 3D paper models.