3D Fuel WorkDay PLA Fire Engine Red 2.85mm 1Kg 3D Filament Diameter Tolerance +/- 0.05mm Made in USA High Temp Resistance -- A high-temperature PLA designed from the ground up for 3D printing with our broadest selection of colors. Workday PLA is for those of you who need to get things done. A beautiful balance of performance price and capabilities. Fire Engine Red was formerly called Nitrous Red Quality: All 3D-Fuel 3D printer filament is manufactured in our own production facility located in Fargo North Dakota. We have complete control over the manufacturing process and are able to ensure consistent quality for every spool. Diameter Tolerance: Variable diameter can cause big problems in your 3D printer. We use a multi-axis laser measurement system to control our filament diameter and ovality in real time during production. Every spool has the diameter and ovality measurements listed right on the box. All 3D-Fuel filament arrives on a durable plastic reel and is vacuum sealed with a desiccant packet to keep out any moisture. 3D-Fuel filament is compatible with most 3D Printers including Makerbot™ Lulzbot™ FlashForge™ Wanhao™ and many others.