St3di black abs 3d printing filament 750g abs filament cartridge for st3di modelsmart pro 200 and 280 3d printers ensure high quality problem free printing with your modelsmart pro 200 and pro 280 3d printers features an integrated smart chip that displays current filament levels and identifies the correct filament when printing key features hard wearing rigid plastic for long lasting use integrated smart chip to display current filament levels and identify correct filament when prin