Polylactic acid filament is extracted from biodegradable materials. Polylactic acid fiber in addition to environmental protection, also in low temperature printing, greatly reducing the warpage. 10 packs of 3D pencils Paint your of 3D art in a of colors. A great gift for your kids and friends to set up and draw and have . Wide range of uses: The filament is a versatile design and is compatible with 3D printers using 1.75mm diameter filaments .Polylactic acid can also print at higher throughput speeds. to the highest standards, circular diameter consistency can make the nozzle to achieve the best flow. What is more - Polylactic acid can be ground, glued, and painted with acrylic paint, so Polylactic acidis still the preferred for designers, engineers and architects who print more complex 3D structures that require smoother, Smoother, smoother look. Material: Polylactic acid ( material) Color: random Note: Random color, 't accept the specified color. Filament diameter: 1.75mm length of each roll: 5 meters (16.4 feet) Temperature range: 190 Celsius - 200 Celsius have to be aware of is:Polylactic acid is when burned and does not produce harmful fumes during printing. Package Included: 10 * Pen Refill Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.