Start Robotics Themed 3D Printing Pen Set.Each set contains: Special edition 3Doodler Start 3D Printing Pen, motor and battery pack, themed Activity Guide with over 6 unique projects, themed DoodleBlocks for "drawing" your own mechanical parts, DoodleSheets, 4 packs (96 strands) of 3Doodler Start Plastic in 8 colours, and Micro USB Charging Cable.