3D Filament Refill Pen 18 Colors 3D Printing Creative Hobbies 3D Printer Product description Specification: Printing Temperature: 356°F-428°F (190°C-230°C) Material: 1.75mm PLA Filament (Polylactic Acid) with Diameter Tolerance +/-0.03mm Quantity: 18 Colors, Each Color is 10 feet, Total 180 feet 18 Unique Colors: Red, Coffee, Pink, Yellow, Light Blue, Green, Orange, Silver Golden, Transparent Blue, Transparent Orange, Transparent Green Transparent Yellow, Transparent White, Baby Pink, Skin, Black, Purple PLA is environmentally friendly, non-toxic, safe and harmless, it is the best option for children's crafts and adult art. Fully compatible with various 3D pens and 3D printers that require a 1.75mm diameter filament. Free your imagination and start creating right away! Package Include: 18 x 3D Filament Refill