[36 COLORS INCLUDED]: This 3d pen filament refills comes with 8 transparent colors, 6 fluorescent colors and 22 popular solid colors. 36 colors 32.8 feet each color, 1181feet in total. The 3d pen filament is a great choice and gift for 3D printing. It will give you more creative options. [HIGH QUALITY]: The PLA 1.75mm 3d pen filament is made from starch raw materials which offers excellent performance over a wide temperature range. Our 3d pen refills have precise diameter tolerance controlling system, which guarantees the diameter accuracy.