3D Drawing Pen - 3D Arts & Crafts Printing Pen Draw in thin air and create 3D masterpieces. Extruder Speed Control (Fast/Slow) for faster or slower Drawing Speeds 0.7mm copper nozzle for fine 3D Freehand Drawing (Tip is VERY HOT) Uses standard 1.75mm ABS filament as used in 3D Printers Includes Sample Black and White filaments to get you started.