SainSmart 2015 NEW 3D Stereoscopic Drawing Pen with LCD Screen for 3D Printing + 3-Spool of Filament + US Plug (Purple) Replaces ink with plastic(1.75mm ABS or PLA Filament) to create 3D object, It can be used to draw in the air as well as tracing objects on paper. Perfect for children above 8 yrs old and adult no matter you are artists, hobbyist or creative lovers. Advanced unclogging mechanisms technology prevents jamming for easy maintenance. Electric heating nozzle integrated and compact design convenient for maintenance and replacement. Bring your art ideas to reality with user friendly functions, you can easily control extrusion speed, temperature, filament; most important thing is it is only 65g in weight compared others in heavy design.