Premium 3D Printer Filament ABS 2.85mm 1kg/spool, ABS is a good choice for a printing material if you are looking for high accuracy,excellent surface quality finish and high resolution. It extrudes at high temperatures and require a heated base, and has a very low shrinkage rate (0.3%). This 1 kg spool features a thickness of 2.85mm ±0.15mm, with a roundness variation of only 0.03mm. Thickness and roundness factors are laser measured at the factory to ensure accuracy over the entire length of the filament.