[Safer and Healthier Material] Compared with 3D Pen Filament Refill ABS/PLA 1.75mm, PCL Filament has a lower melting temperature of 70, which eliminates the risk of burning your hands. In addition, the PCL filament refill is 100% derived from renewable plant resources, and injected into the 3D pen will not produce pungent odor, non-toxic, odorless, non-irritating and biodegradable [20 COLORS] 3D pen filament refill packaging 20 Color, doodle your 3D art masterpiece ideas and make your masterpiece glow in the dark. A great 3D pen for kids and art lovers to DIY what they want and take kids in making and drawing [ULTRA-SMOOTH] PCL Filament for 3D Pen with Low Temperature Release Technology and High Precision PCL Filament 1.75mm diameter ensure your 3D drawing is very smooth, no oily residue or bubbles, no clogging [Universal Compatibility] Compatible with most 3D pens/3D printers on the market, not suitable for 3Doodler pens [Enjoy the fun of creation] This 3D printing pen filament refill is Great gift for kids to improve spatial thinking and develop creative, imaginative and artistic skills. Also, a great way for parents and kids to spend happy time together, strengthen bonding PCL Filament Refill PCL Filament 3D Refill PLA Filament Gold and Silver Handle Tray Handle Size: Length per roll: 3.0m Material: PCLcolor: 20 random colors Colors are random, can not choose to specify the package content: 1 x 3D printing pen PCL filament refill set only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the actual item. The allowable error of measurement is +/- 1-3cm.