Lay3r Craft 3D Pen - 3D Pen, 3D Printing Pen, 3D Drawing - Inc. 3 Spools of Filament, 1 Glow in the Dark, Drawing Board, Tracers, and User Guide 3D Pen for 3D drawing. Compare to 3Doodler. Easy to learn and use. Hours of 3D art fun! Uses 1.75 mm ABS Filament and features cooling fan. 3D Pen for drawing with ABS plastic filament. 1 Year Manufacturer Warranty.