- Second generation 3D modeling pen with LCD display for filament & temperature.Good gift for children to create their art inspiration with drawing artistic works. - The 3D Printing Pen is made with environment friendly plastic,both PLA and ABS printing filament fits to this pen.Printing pen refills replace ink with plastic and allows you to control extrusion speed, temperature, and filament all in great color and in 3D. - Temperature controllable ability: It can be used to control working temperature while using to avoid burn harm. - Easier to put 3d filament,just insert the 3d printing wires to the hole at the top of the pen,and pull the button,the pen will auto absorb the wires.Filament is versatile making them great for artists of all levels, designers, and kids of all ages. - Great Gift for Children.