Why choose Uzone 3D Pen/3D Printer 1.75mm PLA Filament? 1. Safe for kids: PLA material is more Safe for 3D Printing,Smokeless and Toxic Free 2. Value for money: Given the quantity and the quality of the 3D Drawing Pen Refills, you get what you paid for. 3. Premium quality: 100% Virgin PLA plastic that causes no bubbling issues and that solidifies quickly allowing you to add minute details to your creation easily. 4. Smooth PLA filament: 3D Printing Filament that feeds smoothly and constantly without clogging the nozzle. Works best between 160 C-180 C Specifications: Material: PLA 3D Filament( Polylactic Acid) Diameter: 1.75mm (+/- 0.05 mm) Printing Temperature: 160 C-180 C Quantity: 10 feet / color x 12 colors(random) Total Length: 120 feet Whether you're a kid or an adult, these 12 different colors Filaments will help you bring all of wonderful and imaginative ideas to life. Creative a beautiful world Now!.