Features: Our filaments ensure friendly and safe experience with a smooth, consistent flowing for 3D printing 3d printing filament-- high strength, good toughness; low density, , fast forming effect. For 3d pen refill-- compatibles all 1.75mm standard 3d printer. Color Filament 1.75-- easy to : Filament support temperature of 160-200degrees, allowing for fast molding without cracking or bubbling and wont clog the output port, giving you a better product experiences 3d pen filament refills-Smokeless, tasteless, safe and fast molding, making it excellent choice as a gift These color filements with Low shrinkage rate and do perform well Printer. Specifications: Material: 3D Printer Filament Filament Diameter: About 1.75mm printer filament Filament Length: About 5m/196.85in（Each Roll） Quantity: 20Roll/Set Compatibles all 1.75mm standard 3D printer 3d printing Color: Shipped randomly, but it is not repeated Package Includes: 1Set 1.75mm Color Filaments note: Please confirm whether your printer pen can be used before purchasing. The size of each roll is about 5m The color is shipped randomly, but it is not repeated