ABS Acrylonitrile Butadiene Styrene is a favorite filament among 3D printer users because it is light weight and durable. It can be injection molded which makes it perfect for 3D printing extruders. It has a high glass transition temperature to reduce deformation but it is also low enough to be safely attainable with standard 3D printers. ABS is a hard strong plastic with some flexibility when compared to PLA. It is also soluble in Acetone and it can be easily sanded and machined. Compatible with RepRap Makerbot UP! Lulzbot Afinia Solidoodle MakerGear Ultimaker Printrbot LC and more! Extrusion Temperature: 230-245°C Filament Diameter: 1.75mm or 3mm (2.85mm actual) Diameter Tolerance: +/- 0.05mm Net Weight: 1 kilogram / 2.2 pounds Spool Size: 200 mm x 68 mm Spindle diameter: 56.5 mm FAQ? What is the true size of the 3mm filament? The actual filament diameter size of the 3mm filament is 2.85mm. A long time ago 3mm filament used to have a true size of 3.0mm. However the industry standard has shifted to 2.85mm as it is a more lenient filament size to use. What other colors are available? ABS comes in a variety of vibrant colors 34 different options total. Aside from a wide array of bold colors the Gizmo Dorks ABS line has a few special ABS filaments. Fluorescent colors are available; they glow under UV light commonly known as black light. ABS color changing filaments will change colors at 31°C (88°F). The filament is one color below 31°C and when it is heated above 31°C the filament will change to another color. Conductive ABS filament is exactly what the name implies. The conductive filament can be used for the conduction of electric current. Finally ABS carbon fiber is a mixture of carbon fiber blended with ABS increasing dimensional stability and stiffness.