?????????Setting Specification???--ERYONE 1.75mm transparent PETG Filament bundle 1kg helps you print without stringing and warping issues under optimal settings. Extrusion/Nozzle Temperature: 215??C-230??C (419??F - 446??F), Heating Plate /Bed/Platform Temperature: 80-100??C(140??F - 176??F), Speed: 40-80mm/s. ?????????Clog-free & Bubble-Free???-- Designed and Manufactured with Clog-Free patent to guarantee a smooth and stable printing experience. Complete drying for 24 hours before vacuum aluminum foil packaging, which can effectively protect the PETG filament from moisture. As the PETG material is sensitive to moisture, please remember to put it back into the re-sealable aluminum foil bag timely after using to maintain excellent printing result ?????????Less- tangle and Easy to Use???-- Full mechanical winding and strict manual examination, which guarantee the PETG filaments tidy and easy to be fed; Larger spool inner diameter design makes feeding smoother ?????????Dimensional Accuracy & Consistency???-- Advanced CCD diameter measuring and self-adaptive control system in the manufacturing guarantee these PETG filaments of 1.75 mm diameter, dimensional accuracy 99% Probability + / - 0.03 mm; 1 kg spool (2.2lbs) ?????????Strong After-sales Support???--No matter when or why you need to replace or refund we will help! No risk to give us a chance to prove us, ERYONE are your reliable 3d filaments /accessories/3d printer supplier