This 3D pen PRO is a fun creative tool for kids and adults alike. With its two interchangeable filaments and easy-grip design, it allows you to draw and build directly in the air. Simply load the plastic filaments and go - no need for special software or setup. Bring your 3D designs to life by slowly extruding vibrant, colorful strands of plastic as you move the pen. This pen comes with 3 meters each of two random filament colors so you can experiment with different effects. An included adapter also lets you connect the pen to your smartphone to access additional 3D models for tracing. Provide hours of imaginative freehand printing for the budding artist or engineer in your life.