[3D FILAMENT]: 20 different colors of 3D PLA filament, 10M per roll. Our 3D pen refills have rich colors, which can meet your various 3D artistic creation requirements and bring you fun. It is the best gift choice for children and friends. [SAFE FOR CHILDREN]: Our 3D printing filament is made of PLA, a type of plant resource starch material. It is smokeless, non-toxic, odorless, and bubble-free. Compared to ABS, PLA filament is harmless and safe for children. [Material Properties]: 1: The melting point of high-temperature consumables PLA is 160-200℃---biomaterial, extracted from corn, biodegradable, environmentally friendly, hard, high strength, and rigidity. The surface is bright, sharp, and the printed edges are not warped; 2: The melting point of high-temperature consumables ABS is 200-240℃---high strength and good toughness; low density, high-temperature resistance, fast molding effect, and a slightly pungent odor after melting, suitable for industrial printing; 3: The melting point of low-temperature consumables PCL is 60-100℃---polycaprolactone environmentally friendly food-grade materials. The painted works or defective products can be softened with warm water to become kneadable and moldable handmade raw materials, and can be reprocessed an unlimited number of times. The printing temperature is 80~100℃, which is safe. Filament 5M per bundle. Diameter 1.75 mm. [HIGH COMPATIBILITY]: 3D printing filament refills are compatible with both 3D printers and 3D pens that use 1.75mm diameter filament. It provides the best flow through the nozzle, the printing process is smoother, and the finished product is smoother and more beautiful. [IDEAL GIFT]: 3D printer filament 1.75mm is an ideal gift for children and artists to develop their creativity and imagination, improve spatial thinking and artistic skills. It is also a great way for parents and children to share happy moments with each other and build a bond.